1. Which part of a flower matures into a fruit?
Answer:
Explanation:
After fertilization, the ovary of the flower develops into a fruit.
2. The transfer of pollen from an anther to a stigma is called:
Answer:
Explanation:
Pollination is the process of transferring pollen grains from the male part (anther) to the female part (stigma) of a flower.
3. Which of the following is NOT a method of cross-pollination?
Answer:
Explanation:
Gravity is not a common agent of cross-pollination in flowering plants.
4. Double fertilization is a unique feature of:
Answer:
Explanation:
Double fertilization, where one sperm fertilizes the egg cell and another fuses with two polar nuclei, is a unique phenomenon in angiosperms.
5. The male reproductive part of a flower is:
Answer:
Explanation:
The stamen is the male reproductive part of a flower and consists of the anther and filament.
6. In plants, the process by which seeds swell up and seeds begin to grow is called:
Answer:
Explanation:
Germination is the process by which a seed absorbs water, swells up, and begins to grow into a seedling.
7. Which part of the flower contains ovules?
Answer:
Explanation:
The ovary is the part of the flower that contains ovules. After fertilization, ovules develop into seeds.
8. The fusion of male and female gametes in plants results in the formation of:
Answer:
Explanation:
The fusion of male and female gametes results in a zygote, which later develops into an embryo.
9. Which of the following is NOT a part of the female reproductive system in plants?
Answer:
Explanation:
The filament is a part of the stamen, which is the male reproductive part of a flower.
10. The edible part of an apple is derived from the:
Answer:
Explanation:
In an apple, the fleshy part we eat is derived from the thalamus or receptacle of the flower.
11. The term for flowers that contain both male and female reproductive parts is:
Answer:
Explanation:
Hermaphroditic or bisexual flowers contain both male (stamen) and female (pistil) reproductive parts.
12. The process in which pollen tube grows towards the ovule, guided by chemicals, is known as:
Answer:
Explanation:
The growth of the pollen tube towards the ovule under the guidance of certain chemicals is called chemotropism.
13. In angiosperms, the endosperm is usually:
Answer:
Explanation:
In angiosperms, the endosperm is triploid, resulting from the fusion of two polar nuclei with one sperm nucleus.
14. Seed dispersal helps plants in:
Answer:
Explanation:
Seed dispersal helps in the spread of the species and avoids competition among the same species.
15. Which of the following plants undergoes vegetative propagation through bulbs?
Answer:
Explanation:
Onion plants reproduce vegetatively through bulbs.
16. In which of the following plants is the seed dispersed by water?
Answer:
Explanation:
The fibrous husk of the coconut aids in its flotation and dispersal by water.
17. Which of the following is an agent of pollination?
Answer:
Explanation:
Butterflies visit flowers for nectar and in the process facilitate pollination.
18. Which part of the flower protects the inner delicate parts before it opens?
Answer:
Explanation:
Sepals are the outermost whorl of a flower that protects the inner parts when the flower is still a bud.
19. The ovary of a flower may contain:
Answer:
Explanation:
Depending on the species, an ovary may contain one or more ovules.
20. Which of the following flowers is wind-pollinated?
Answer:
Explanation:
Maize has long, exposed tassels and produces lightweight pollen, making it adapted for wind pollination.