1. Which part of a plant is responsible for photosynthesis?
Answer:
Explanation:
Leaves contain chlorophyll and are the primary site for photosynthesis.
2. The main function of root hairs is:
Answer:
Explanation:
Root hairs increase the surface area for absorption.
3. A flower which has both stamens and carpels is called:
Answer:
Explanation:
Bisexual flowers have both male and female reproductive organs.
4. The arrangement of leaves on a stem or branch is known as:
Answer:
Explanation:
Phyllotaxy refers to the pattern of leaf arrangement.
5. Which of the following is a modified stem for storage?
Answer:
Explanation:
Rhizomes, like ginger, are underground stems that store nutrients.
6. The floral whorl which contains sepals is called:
Answer:
Explanation:
The calyx consists of all the sepals of a flower.
7. Which part of the flower develops into a fruit?
Answer:
Explanation:
After fertilization, the ovary develops into a fruit.
8. The type of venation in which veins are arranged parallel to each other is:
Answer:
Explanation:
Parallel venation is seen in monocots like banana leaves.
9. Thorns found in plants are modified:
Answer:
Explanation:
Thorns, like those in rose, are modified stems for protection.
10. Which of the following is a climbing organ in plants?
Answer:
Explanation:
Tendrils help some plants to climb over supports.
11. The study of external features of plants is called:
Answer:
Explanation:
Morphology deals with the study of form and structure.
12. Which part of the flower produces pollen grains?
Answer:
Explanation:
Anther is the pollen-producing part of a flower.
13. The fleshy thalamus bearing floral parts on its surface is seen in:
Answer:
Explanation:
In perigynous flowers, the ovary is surrounded by the thalamus.
14. Modified leaves that surround and protect the flower bud are:
Answer:
Explanation:
Sepals protect the flower bud and are usually green.
15. The floral part that receives pollen grains during pollination is:
Answer:
Explanation:
Stigma is the receptive part of the carpel for pollen grains.
16. A leaf modified to store food in an onion is:
Answer:
Explanation:
In onions, the fleshy scale leaves store food.
17. Which part of the flower is essential for seed formation?
Answer:
Explanation:
Carpel contains the ovule, which after fertilization, develops into a seed.
18. A modified stem that helps in vegetative propagation in grass is:
Answer:
Explanation:
Runners spread horizontally and help in propagation.
19. The arrangement of floral leaves in a bud is:
Answer:
Explanation:
Aestivation pertains to the arrangement of sepals and petals in the floral bud.
20. The presence of vascular bundles scattered in the ground tissue is characteristic of:
Answer:
Explanation:
In monocots, vascular bundles are scattered, unlike dicots where they are arranged in a ring.