ICSE Biology 8 Worksheets PDF

PRACTICE WORKSHEETS with SRIJAN ICSE Biology Class 8  CONTENTS Chapter 1. Transport of Food and Minerals in Plants Worksheet 1.......................................................................... 3 Worksheet 2..........................

PRACTICE WORKSHEETS with SRIJAN ICSE Biology Class 8  CONTENTS Chapter 1. Transport of Food and Minerals in Plants Worksheet 1.......................................................................... 3 Worksheet 2.......................................................................... 4 Chapter 2. Reproduction in Plants Worksheet 1.......................................................................... 5 Worksheet 2.......................................................................... 6 Chapter 3. Reproduction in Animals Worksheet 1.......................................................................... 7 Worksheet 2.......................................................................... 8 Chapter 4. Ecosystem Worksheet 1.......................................................................... 9 Worksheet 2........................................................................ 10 Chapter 5. Endocrine System Worksheet 1........................................................................ 11 Worksheet 2........................................................................ 12 Chapter 6. Circulatory System Worksheet 1........................................................................ 13 Worksheet 2........................................................................ 14 Chapter 7. Nervous System Worksheet 1........................................................................ 15 Worksheet 2........................................................................ 16 Chapter 8. Health and Hygiene Worksheet.......................................................................... 17 Chapter 9. Food Production Worksheet.......................................................................... 18 2  Chapter 1: Transport of Food and Minerals in Plants Worksheet 1 1. Fill in the blanks. (i) Absorption of minerals by root hair takes place by. (ii) pull helps in drawing water from root to leaves of tall trees. (iii) Transport of material in unicellular plants takes place by. (iv) Plants lose excess of water by the process of. (v) Delayed flowering in plants is due to deficiency of. 2. Define these elements. (i) Essential elements (ii) Root pressure (iii) Ascent of sap (iv) Osmosis (v) Phloem 3. Match the following. Column A Column B (i) Nitrogen (a) Tubular cells (ii) Algae (b) Proteins and nucleic acids (iii) Xylem vessels (c) Semipermeable membrane (iv) Root hair (d) Cell-to-cell diffusion (v) Egg membrane (e) Epidermal cell ICSE Biology 8 3  Chapter 1: Transport of Food and Minerals in Plants Worksheet 2 1. Tick the correct answer. (i) They contain sieve plates at their ends. (a) xylem vessels (b) phloem vessels (c) companion cells (d) xylem parenchyma (ii) Root hair are extentions of (a) epidermal cells (b) cortical cells (c) endodermal cells (d) xylem vessels (iii) Diffusion is movement of molecules from (a) aerial parts of plant to roots (b) lower concentration to higher concentration (c) higher concentration to lower concentration (d) roots to aerial parts of plant (iv) This process takes place by consuming energy. (a) active transport (b) passive transport (c) osmosis (d) diffusion (v) Premature leaf fall occurs due to deficiency of (a) nitrogen (b) boron (c) zinc (d) phosphorus 2. Answer the following questions. (i) Why do cut flowers kept in water remain fresh? (ii) Why does transpiration produce cooling effect? (iii) What is the difference between diffusion and osmosis? (iv) Why are phloem vessels also called sieve tubes? (v) Which other membranes can be used as semipermeable membrane? 3. Draw the following. (i) Detailed structure of a root hair (ii) LS phloem showing structure of sieve tubes 4 ICSE Biology 8  Chapter 2: Reproduction in Plants Worksheet 1 1. Fill in the blanks. (i) changes into fruit after fertilisation. (ii) Wheat and rice are fruits. (iii) Stigmas are large in pollinated flowers. (iv) is a mass of undifferentiated plant cells in tissue culture. (v) In Bryophyllum, vegetative propagation takes place by adventitious. 2. Give one word answer. (i) A branched underground stem which swells up due to storage of food (ii) The genetically identical offspring (iii) Very small reproductive bodies formed in spore sacs (iv) The dipressions on stem tuber of potato having buds (v) The result of fertilisation 3. Match the following. Column A Column B (i) Tuberous roots (a) Grafting (ii) Scion-stock (b) Insect pollination (iii) Sticky pollen (c) Ripened ovary (iv) Fruit (d) Gladiolus (v) Corm (e) Sweet potato 4. Answer the following questions. (i) Name some plants grown by subaerial stems. (ii) What changes occur in a flower after fertilisation? (iii) Lotus is an aquatic plant but its flowers are pollinated by insects and not by water. Why? (iv) Name the events involved in sexual reproduction. (v) What is economic importance of artificial propagation? ICSE Biology 8 5  Chapter 2: Reproduction in Plants Worksheet 2 1. Tick the correct answer. (i) Which of these structures forms the wall of fruit? (a) pericarp (b) mesocarp (c) epicarp (d) endocarp (ii) Unisexual flowers do not contain (a) androecium (b) gynoecium (c) either (a) or (b) (d) both (a) and (b) (iii) The pollen grains of insect-pollinated flowers are (a) small, light, dry (b) large, rough, dry (c) large, rough, sticky (d) small, rough, dry (iv) This is not a feature of a wind-pollinated flower. (a) small, white, dull flowers (b) absence of nectar (c) sticky pollen grains (d) light pollen grains (v) The body of an individual divides into two daughter individuals by (a) binary fission (b) mutiple fission (c) budding (d) sporulation 2. Cross the odd one out. (i) Rhizome, Bulb, Stolon, Corm (ii) Explant, Callus, Stock, Plantlets (iii) Stigma, Style, Ovary, Anther (iv) Fission, Budding, Fragmentation, Layering (v) Selection, Fertilisation, Emasculation, Bagging 3. Define the following. (i) Micropropagation (ii) Clone (iii) Pollination (iv) Gynoecium (v) Spore 4. Draw and label the following. (i) Binary fission in bacteria (ii) Tuberous roots of sweet potato 6 ICSE Biology 8  Chapter 3: Reproduction in Animals Worksheet 1 1. Give one word answer. (i) Milky fluid containing sperm (ii) The term used for egg-laying animals (iii) The fusion of male and female gametes (iv) The male gametes in humans (v) The embryo which resembles human form 2. Fill in the blanks. (i) The male hormone secreted by testes is. (ii) In humans, fertilisation occurs in. (iii) The process of formation of sperm and ova is called. (iv) Hydra multiplies by. 3. Match the following. Column A Column B (i) Amoeba (a) Testes (ii) Viviparous animal (b) Ovary (iii) Fertilised egg (c) Binary fission (iv) Estrogen (d) Zygote (v) Scrotal sacs (e) Human beings 4. Correct the statements by replacing wrong word(s). (i) The human life cycle starts with childhood. (ii) The placenta forms a protective bag around the foetus. (iii) The ovulation occurs from oviducts. (iv) Reptiles are viviparous animals. (v) Amoeba undergoes budding. ICSE Biology 8 7  Chapter 3: Reproduction in Animals Worksheet 2 1. Tick the correct answer. (i) Which of these is a viviparous animal? (a) Amoeba (b) frog (c) fish (d) dog (ii) Gametes in human beings are (a) sperm and ovum (b) sperm and zygote (c) ovum and zygote (d) sperm, ovum and zygote (iii) Which of these is also a part of male reproductive system? (a) uterus (b) ureter (c) urethra (d) cervix (iv) Testes produce (a) ovum (b) sperm (c) sperm and ovum(d) semen (v) The embryo takes nutrition from (a) ovaries (b) uterus (c) placenta (d) cervix 2. Name the following. (i) Foetus’ life support system (ii) A condition in which a woman carries an embryo attached to her uterine wall (iii) The full term of development of a baby in the womb (iv) The pouch outside the body in which testes are placed (v) The process of development of embryo 3. Encircle the correct word. (i) Fission/Budding is the development of a new organism as an outgrowth on the parent body. (ii) Zygote/Ovum is the first cell of the new organism. (iii) External/Internal fertilisation occurs in frog. (iv) The release of mature ovum from ovary/oviducts is called gestation/ovulation. (v) The act of giving birth to a baby is called implantation/parturition. 4. Draw the following. (i) Human gametes – Egg and Sperm 8 ICSE Biology 8  Chapter 4: Ecosystem Worksheet 1 1. Fill in the blanks. (i) The large-scale planting of trees is called. (ii) prey upon herbivores. (iii) Vultures play an important role of in an ecosystem. (iv) Every food chain starts with. (v) The ultimate source of energy in an ecosystem is. 2. Write T for true and F for false statement. (i) Evergreen broad-leaved, tall trees are found in temperate deciduous forest. (ii) The flow of energy in an ecosystem is in one direction only. (iii) The pyramid of number is always inverted. (iv) Animals are consumers in an ecosystem. (v) Omnivores eat plant and animal food. 3. Answer the following questions. (i) What are autotrophs? (ii) Name the abiotic components of an ecosystem. (iii) What is the difference between decomposers and transformers? (iv) What do you mean by habitat? (v) Give two examples of secondary consumers which eat (a) herbivores only (b) plants as well as animals ICSE Biology 8 9  Chapter 4: Ecosystem Worksheet 2 1. Tick the correct answer. (i) They are consumers. (a) all animals (b) all bacteria (c) all nongreen plants (d) all animals and some nongreen plants (ii) The term ecosystem was coined by British ecologist (a) Ernst Haeckel (b) A G Tansley (c) Robert Hooke (d) Brown (iii) Which of these is a nonliving component of ecosystem? (a) wind (b) consumer (c) producer (d) decomposer (iv) The number of trophic levels in the given food chain is Grass −→ Grasshopper −→ Frog −→ Snake −→ Eagle (a) 2 (b) 3 (c) 4 (d) 5 (v) The pyramid of number is always (a) inverted (b) upright (c) tilted (d) slanted 2. Pick the correct word(s). (i) In a pyramid of number, the number of consumers gradually decreases/ increases from base/top to base/top. (ii) Cuscuta is an/a animal/plant parasite. (iii) Physical/Edaphic factors are related to soil and topography. (iv) Estuarine is a freshwater/marine ecosystem. (v) In an ecosystem, snake is a primary/secondary consumer. 3. Differentiate between the following. (i) Community and population (ii) Ecology and ecosystem (iii) Secondary and tertiary consumers (iv) Ectoparasite and endoparasite 10 ICSE Biology 8  Chapter 5: Endocrine System Worksheet 1 1. Fill in the blanks. (i) Diabetes mellitus is caused due to the deficiency of while diabetes insipidus is caused due to the deficiency of. (ii) Glucagon hormone is antagonistic to hormone. (iii) Corticoids are secreted by. (iv) Puberty is a period during phase. 2. Match the following. Column A Column B (i) Beard and moustaches (a) Larynx (ii) Adrenaline (b) Hormone (iii) Chemical messenger (c) Emergency hormone (iv) Adam’s apple (d) Ovaries (v) Estrogen (e) Secondary sexual characters 3. Answer the following questions. (i) What are the ways to stress management? (ii) Why is personal hygiene necessary? (iii) What are ductless glands called? (iv) Name the hormones secreted by pancreas. (v) Where is thyroid gland located? ICSE Biology 8 11  Chapter 5: Endocrine System Worksheet 2 1. Write T for true and F for false statement. (i) Adolescence covers teens from 12 to 19 years. (ii) Pituitary is the largest gland of the body. (iii) Hypersecretion refers to more than normal secretion by a gland. (iv) Thyroid gland is an exocrine gland. (v) In chemical control, message travels rapidly. 2. Name the hormones. (i) Antidiuretic hormone (ii) Hormone for fight or flight (iii) Hormone for proper growth of the body (iv) Hormone for smooth child birth (v) Hormone for secondary sexual characters 3. Give location of the following. (i) Adam’s apple (ii) Thyroid gland (iii) Pancreas (iv) Pituitary gland (v) Islets of Langerhans 12 ICSE Biology 8  Chapter 6: Circulatory System Worksheet 1 1. Write T for true and F for false statement. (i) Heart pumps blood into body organs directly. (ii) Tricuspid valves are found in right atrium. (iii) Aorta from left ventricle carries deoxygenated blood. (iv) Diastole is a phase of joint relaxation during a cardiac cycle. (v) Lymph vessel in villi is called lacteal. 2. Give one word answer. (i) The muscles of heart (ii) A muscular wall between right and left ventricles (iii) The fine blood vessels joining arteries with veins (iv) The universal blood donor (v) The sudden failure of heart to pump the blood 3. Match the following. Column A Column B (i) Hypertension (a) Lungs and heart (ii) Adenoids (b) Heart muscles (iii) Receiving chambers (c) Lymph node (iv) Coronary artery (d) 140/90 (v) Pulmonary circulation (e) Atria ICSE Biology 8 13  Chapter 6: Circulatory System Worksheet 2 1. Tick (3) the correct word. (i) Lub/Dub sound is heard on the closure of cuspid valves. (ii) Circulation between heart and body parts is called pulmonary/systemic circulation. (iii) Pulmonary aorta/Aorta is the largest and the longest artery in the body. (iv) Right/Left ventricle is the largest heart chamber. (v) Lymph vessels have/do not have valves. 2. Fill in the blanks. (i) The is a connecting link between tissue fluid and blood. (ii) Blood group is called universal donor, whereas is called universal acceptor. (iii) All arteries carry oxygenated blood except artery. (iv) Pulse can be felt at artery in the wrist. (v) is the phase of contraction of heart muscles during heartbeat. 3. Answer the following questions. (i) What is pericardium? (ii) What is the function of valves found in different organs of circulatory system? (iii) What is double circulation? (iv) What is pacemaker in heart? (v) What is pulse and pulse rate? 14 ICSE Biology 8  Chapter 7: Nervous System Worksheet 1 1. Fill in the blanks. (i) is the structural and functional unit of nervous system. (ii) Cranial nerves are pairs. (iii) Functioning of visceral organs is controlled by. (iv) neurons conduct impulses from brain or spinal cord to organs. (v) We on seeing tasty food. 2. Match the following. Column A Column B (i) Synapse (a) Axon (ii) Myelin sheath (b) Medulla oblongata (iii) Sensory neurons (c) Neurotransmitters (iv) Brain stem (d) Reflex action (v) Blinking of eye (e) Receptors 3. Give one word answer. (i) A constriction between two Schwann cells (ii) The part of brain also called little brain (iii) Sudden and quick action without thinking (iv) The organ which receives stimulus (v) The two halves of cerebrum ICSE Biology 8 15  Chapter 7: Nervous System Worksheet 2 1. Tick the correct answer. (i) Cerebrum is the site of (a) intelligence (b) thinking (c) learning (d) all of these (ii) Knee-jerk reflex is controlled by (a) spinal cord (b) medulla (c) cerebellum (d) cerebrum (iii) Myelinated nerve fibres have around them (a) gyri (b) sulci (c) medullary sheath (d) both (a) and (b) (iv) Dendrite processes are (a) afferent (b) efferent (c) sensory (d) motor (v) The brain is covered by (a) white matter (b) gray matter (c) meninges (d) gyri and sulci 2. Write T for true and F for false statement. (i) Pavlov’s experiment is based on acquired reflexes. (ii) Reflex actions are controlled by cerebrum. (iii) Pupil reflex is controlled by spinal cord. (iv) Medulla controls all the voluntary activities of the body. (v) Gray matter is formed of cell bodies of neurons. 3. Answer the following questions. (i) What are mixed nerves? (ii) How is brain protected in the body? (iii) What is brain stem? (iv) What is a stimulus? (v) What is a nerve impulse? 16 ICSE Biology 8  Chapter 8: Health and Hygiene Worksheet 1. Fill in the blanks. (i) The disease causing microbes are called. (ii) DT vaccine is given for protection against and. (iii) is used to support a fractured leg. (iv) Botulism is a. (v) Malaria is caused by. 2. Correct the statements by replacing wrong word(s). (i) Driving after taking alcohol leads to fun. (ii) Goitre is a communicable disease. (iii) Dengue is transmitted by air. (iv) Chemical burns should be washed with chemicals. (v) Vaccine stimulates formation of RBCs. 3. Name the following. (i) The category of burns which affects only top layer of skin (ii) The drugs which influence the psychic activities (iii) The nonsmokers accompanying active smokers (iv) The vaccine given orally (v) The disease also called break-bone fever 4. Answer the following questions. (i) Name a disease which commonly occurs in dirty areas. (ii) Who are passive smokers? (iii) What is a vector? (iv) Differentiate between HIV and AIDS. (v) What is epidemics? ICSE Biology 8 17  Chapter 9: Food Production Worksheet 1. Tick the correct answer. (i) Curd is obtained by the action of (a) bacterium (b) alga (c) fungus (d) virus (ii) Agriculture is (a) crop farming (b) animal husbandry (c) vegetable growing (d) both (a) and (b) (iii) Apiculture is the practice of rearing (a) bees (b) silk moth (c) domestic animals(d) fishes (iv) Science of growing vegetables, fruits and ornamental plants is called (a) pisciculture (b) sericulture (c) horticulture (d) agriculture (v) The exotic breed of poultry is (a) aseel (b) white leghorn (c) large white yorkshire (d) bikaneri 2. Write T for true and F for false statement. (i) Silk is obtained from silk moth larva. (ii) Agriculture is the process of growing crops for food. (iii) Winter crop is called kharif crop. (iv) Worker bees in a beehive are sterile males. (v) Morchella and Agaricus are edible mushrooms. 3. Give one word answer. (i) Compost prepared by introducing earthworms (ii) The bacterium which converts milk into curd (iii) Males of livestock used for agricultural work (iv) A gas released by yeast which makes the dough soft and fluffy (v) The plant on which leaves the silkworm feeds 4. Cross the odd one out. (i) Queen, Drone, Worker bee, Cocoon (ii) Murrah, Surti, Mehsana, Ghori 18 ICSE Biology 8 NOT FOR SALE © Srijan Publishers All rights reserved. First Published 2021 10 9 8 7 6 5 4 3 2 1