Plant Diversity and Structure

Section 2: Plant Diversity and Structure

Plants with weak stems that cannot stand upright and spread on the ground are called:

(a) Creepers

(b) Climbers

(c) Shrubs

(d) Herbs

Answer: (a)

The part of the plant that grows below the ground is the:

(a) Shoot system

(b) Root system

(c) Leaf system

(d) Reproductive system

Answer: (b)

Green plants make their own food through the process of:

(a) Transpiration

(b) Respiration

(c) Photosynthesis

(d) Oxidation

Answer: (c)

Which of these plants has a taproot system?

(a) Wheat

(b) Maize

(c) Pea

(d) Grass

Answer: (c)

The design made by veins in a leaf is called:

(a) Leaf venation

(b) Chlorophyll

(c) Midrib

(d) Petiole

Answer: (a)

In which type of venation do the veins run parallel to each other?

(a) Reticulate venation

(b) Parallel venation

(c) Circular venation

(d) Cross venation

Answer: (b)

The small pores on the surface of leaves used for gas exchange are:

(a) Veins

(b) Stomata

(c) Lamina

(d) Nodes

Answer: (b)

The part of the leaf by which it is attached to the stem is the:

(a) Lamina

(b) Petiole

(c) Midrib

(d) Vein

Answer: (b)

Plants like lemon and rose, which have stems branching out near the base, are classified as:

(a) Herbs

(b) Trees

(c) Shrubs

(d) Creepers

Answer: (c)

Which of the following is a function of the stem?

(a) Absorption of water

(b) Anchoring the plant

(c) Conduction of water and minerals

(d) Reproduction

Answer: (c)

Reticulate venation is generally found in plants with:

(a) Taproots

(b) Fibrous roots

(c) No roots

(d) Adventitious roots

Answer: (a)

The broad green part of the leaf is called the:

(a) Petiole

(b) Lamina

(c) Node

(d) Internode

Answer: (b)

Plants that take support on neighboring structures and climb up are called:

(a) Creepers

(b) Climbers

(c) Herbs

(d) Shrubs

Answer: (b)

Which gas is released by plants during photosynthesis?

(a) Carbon dioxide

(b) Nitrogen

(c) Oxygen

(d) Hydrogen

Answer: (c)

Water comes out of leaves in the form of vapor by a process called:

(a) Photosynthesis

(b) Transpiration

(c) Respiration

(d) Filtration

Answer: (b)