30 Questions
Which part of the plant is defined as the descending part of the plant axis?
Root
What type of tropism does the root exhibit?
Positively hydrotropic
What do the cells of the root cap secrete for lubricating the passage of root through the soil?
Mucilage
In many hydrophytes like Pistia and Eichhornia, what replaces the root cap?
Root pocket
What type of roots are generally cylindrical and non-green?
Fibrous roots
What don't roots in hydrophytes like Pistia and Eichhornia need to do?
Penetrate hard soil
What is the function of the region of cell division or meristematic region in roots?
This is the growing part of the root and is protected by the root cap
What is the main function of the epiblema or piliferous layer in roots?
Presence of unicellular and unbranched root hairs for water absorption
What is the role of the region of maturation or cell differentiation in roots?
Formation of different types of primary root tissue like cortex, endodermis, xylem, phloem
What is the main function of lateral roots in plants?
Anchoring the plant firmly into the ground
What is the purpose of root hairs in plants?
Absorption of water and nutrients from the soil
What is a notable feature of epidermis with root hairs (epiblema) in roots?
Presence of unicellular and unbranched root hairs for water absorption
What is the main function of the region of elongation in roots?
Absorption of mineral salts
What is the primary function of root pockets in aquatic plants like Pistia and Water hyacinth?
Regeneration
What is responsible for the absorption of mineral salts in roots?
Region of elongation
Apart from anchoring, what is another function performed by roots to prevent soil erosion?
Preventing soil erosion by binding soil particles together
Which of the following characteristics is NOT associated with plants?
Chitin cell walls
What major evolutionary development allowed embryos to leave the parent plant encased in a resistant coat with a food supply?
Origin of the seed
What specific adaptation played a crucial role in protecting gametes and embryos from desiccation?
Seeds
From which group of organisms did plants evolve?
Charophyceans with chl
What allowed plants to move from water (algae) to land approximately 400 million years ago?
Vascular tissue
What type of autotrophic organisms have cellulose cell walls and store carbohydrates as starch?
Plants
Which type of plants lack true roots, stems, and leaves?
Bryophytes
What is a notable characteristic of mosses?
No true roots and simple stems
In which type of plants are needle-shaped leaves a common characteristic?
Gymnosperms
Where are the spore-producing organs located in ferns?
On the underside of leaves
Which division of plants includes whiskferns and lacks many terrestrial adaptations?
Psilophyta
Which type of plants have a trend toward increasing dominance of the diploid sporophyte?
Vascular plants
What is a characteristic of dicotyledons?
Parallel veins in leaves
Which group of plants produces flowers and fruits?
Dicotyledons
Test your knowledge of the morphology of flowering plants with a focus on the characteristics of roots, stems, leaves, flowers, fruits, and seeds as discussed in the tenth lecture by Dr. Faiza Al Atrash at Arab International University.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
