Reproduction In Plants Short Question With Answer: General Science Cadet College Test
Q.No.01: Define Reproduction?
Ans: Reproduction is a process in which organisms produce new organisms (offsprings) like themselves.
Q.No.02: How many parts does a flower have? Write their names?
Ans: A flower has four parts:
(i) Sepals (ii) Petals (iii) Stamens (iv) Carpels
(i) Sepals (ii) Petals (iii) Stamens (iv) Carpels
Q.No.03: Define statement?
Ans: Male part of a flower is called stamen. A stamen has two main parts: anther & filament. Anther produce pollen grains.
Q.No.04: What is a carpel?
Ans: Female part of a flower is a carpel. A carpel has three prominent parts: stigma, style and ovary. Ovules are present in an ovary.
Q.No.05: Define pollination?
Ans: The transfer of pollen grain from the anther to the stigma is called pollination.
Q.No.06: Write importance of pollination?
Ans: The male sex cells (sperms) reach the female sex cells (eggs) by pollination. The pollen grains are transferred from one flower to another.
Q.No.07: What are Gametes?
Ans: Sex cells are called Gametes. Such as male sex cells (sperms) & female sex cells (eggs) are collectively called gametes.
Q.No.08: By which method pollen grains are transferred?
Ans: Pollen grains are transferred by various methods. Such as by wind, water, insects and animals etc.
Q.No.09: Define self-pollination?
Ans: The transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant is called self-pollination i.e. pea, tomato etc.
Q.No.10: Define cross pollination?
Ans: The transfer of pollen grains from the anther of a flower to the stigma of a flower on another plant of the same kind is called cross pollination i.e. poplar, willow, apple etc.
Q.No.11: What are the characteristics of cross pollination?
Ans: For cross pollination, the plants must grow flowers at the same time. Cross pollination usually happens in plants near to each other.
Q.No.12: Write advantages of cross pollination?
Ans: Cross pollination produces stronger plants as compared to the self-pollination. Some flowers have special features that favour cross-pollination e.g. colored petals, long and sticky stigma, nectar etc.
Q.No.13: Define pollinator?
Ans: The agents of pollination are called pollinators. Which are wind, water, birds, insects, etc.
Q.No.14: How pollen grains are dispersed through wind?
Ans: Pollen grains have feather and hair like structure which helps them to blow from one flower to the other.
Q.No.15: How are animals useful in pollination?
Ans: Insect and other animals can transfer pollen grains when they move or fly through the flowers. The bright color of petals, nectar juice, pleasant fragrance and attractive shape attract the animals towards the flowers.
Q.No.16: How pollen grains are dispersed through water?
Ans: In pollination by water, pollen grains move slowly along the water currents and reach other aquatic plants.
Q.No.17: Bees help in pollination. How?
Ans: Some pollen grains are sticky, when honey bees visit flowers for food. They stick to the body of bees. In such a way, bees help in pollination.
Q.No.18: How plants reproduce?
Ans: Plants reproduce themselves in two ways:
(i) Flowering plants reproduce by seed.
(ii) Non-flowering plants reproduce by spores.
(i) Flowering plants reproduce by seed.
(ii) Non-flowering plants reproduce by spores.
Q.No.19: Define Asexual reproduction?
Ans: When a cell from only one parent develops into offspring is called asexual reproduction.