Plant Reproductive Structures

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What is the primary function of flowers in plants?

To reproduce by spores

To increase the height of the plant

To produce complex tissues

To enable zoophilous pollination (correct)

What is the name of the female organs in a plant?

Gametophyte

Pistil (correct)

Stamen

Rhizoid

What is the characteristic of leaves in Bryophyta plants?

They are multi-cellular

They are one cell thick (correct)

They have a vascular system

They have a root system

What is the result of fertilization in Bryophyta plants?

Formation of a zygote (A) Signup and view all the answers

What is the purpose of meiosis in the life cycle of Bryophyta plants?

To end the diploid phase (C) Signup and view all the answers

What is the characteristic of the rhizoid in Bryophyta plants?

It is a type of root (A) Signup and view all the answers

What is the characteristic of the class Hydrozoa?

Both life stages appear (A) Signup and view all the answers

What is the effect of global warming on coral reefs?

It causes the algae to leave the coral, leading to the death of polyps (B) Signup and view all the answers

What is the characteristic of the phylum Platyhelminthes?

They have a bilaterally symmetrical body (C) Signup and view all the answers

What is the role of the cytoskeleton in coral reefs?

It deposits on the bottom of the sea when the organism dies (A) Signup and view all the answers

What is cephalization?

The development of a head with an adapted nervous system (D) Signup and view all the answers

What is the characteristic of the class Cubozoa?

They have a squared shape (B) Signup and view all the answers

What is the primary function of the joints in the exoskeleton of arachnids?

To allow for flexibility and movement of appendages (B) Signup and view all the answers

What is the main reason for the reduction of intraspecific competition in arachnids?

Different life stages require different food sources (C) Signup and view all the answers

What is unique about the eyes of arachnids in the class Arachnida?

They have simple eyes (D) Signup and view all the answers

What is the function of the pedipalps in arachnids?

They are special appendages for feeding (C) Signup and view all the answers

What is the primary function of the chelicerae in arachnids?

They are special feeding appendages (B) Signup and view all the answers

What is a characteristic of the abdomen of arachnids in the class Arachnida?

It has no locomotive appendages (B) Signup and view all the answers

What is the primary function of the notochord in chordates?

To give strength and support (A) Signup and view all the answers

Which of the following features is NOT characteristic of chordates?

Solid ventral nervous chord (B) Signup and view all the answers

What is the significance of pharyngeal slits in chordates?

They connect the exterior with the pharyngeal cavity (A) Signup and view all the answers

Which of the following classes of chordates is characterized by the presence of feathers?

Aves (B) Signup and view all the answers

What is the result of the development of the notochord in humans?

Formation of intervertebral discs (D) Signup and view all the answers

What is the characteristic of the endoskeleton in chordates?

It is internal and allows for continuous growth (B) Signup and view all the answers

What percentage of species live under the sea?

98% (C) Signup and view all the answers

What is the main characteristic of Benthic lifeforms?

They live on the ocean floor (B) Signup and view all the answers

What is the term for areas where sunlight reaches?

Photic zone (C) Signup and view all the answers

What is the name given to animals that resemble each other but are found in distant places?

Disjunct distributions (D) Signup and view all the answers

What is the term for the study of animals moving from one place to another, resulting in new species?

Biogeographical processes (B) Signup and view all the answers