sexual reproduction in flowering plants mcq
Which part of the flower contains the male reproductive structures?
a) Sepals
b) Petals
c) Stigma
d) Stamen
Answer: d) Stamen
Explanation: The stamen is the male reproductive organ of a flower, consisting of the anther and filament.
What is the process of transfer of pollen grains from an anther to a stigma called?
a) Pollination
b) Fertilization
c) Germination
d) Dispersal
Answer: a) Pollination
Explanation: Pollination is the transfer of pollen grains from the anther (male) to the stigma (female) of a flower.
In plants, which structure produces the male gametes?
a) Anther
b) Ovary
c) Stigma
d) Style
Answer: a) Anther
Explanation: The anther is responsible for producing the male gametes (pollen grains) in flowering plants.
What is the female reproductive part of a flower called?
a) Stamen
b) Carpel
c) Petal
d) Pistil
Answer: d) Pistil
Explanation: The pistil, also known as the carpel, is the female reproductive structure in a flower, consisting of the stigma, style, and ovary.
Which of the following is not a method of pollination in flowering plants?
a) Wind pollination
b) Insect pollination
c) Water pollination
d) Root pollination
Answer: d) Root pollination
Explanation: Root pollination is not a method of pollination in flowering plants. Pollination usually occurs through wind, insects, or water.
The fusion of male and female gametes is known as:
a) Pollination
b) Fertilization
c) Germination
d) Dispersal
Answer: b Fertilization
What is the structure that develops from the fertilized ovule in a flower?
a) Petal
b) Stamen
c) Fruit
d) Style
Answer: c) Fruit
Explanation: The fruit develops from the fertilized ovule, which contains seeds.
What is the male gamete in flowering plants called?
a) Pollen grain
b) Ovule
c) Embryo sac
d) Zygote
Answer: a) Pollen grain
Explanation: The male gamete in flowering plants is called a pollen grain.
What is the process of pollen tube growth through the style to reach the ovule called?
a) Fertilization
b) Germination
c) Pollination
d) Maturation
Answer: b) Germination
Explanation: After pollination, the pollen tube grows through the style to reach the ovule, a process known as germination.
Which of the following is an example of a self pollinating plant?
a) Corn
b) Sunflower
c) Orchid
d) Maple tree
Answer: a) Corn
In flowering plants what is the purpose of nectar?
a) Attracting pollinators
b) Protecting the flower from pests
c) Providing nutrients to the ovule
d) Facilitating pollen tube growth
Answer: a) Attracting pollinators
What is the term for the transfer of pollen grains from one flower’s anther to the stigma of another flower on a different plant?
a) Self-pollination
b) Cross-pollination
c) Wind pollination
d) Insect pollination
Answer: b) Cross-pollination
Which structure in the flower contains the ovules?
a) Anther
b) Petal
c) Ovary
d) Stigma
Answer: c) Ovary
What is the name of the process in which the ovary develops into a fruit after fertilization?
a) Germination
b) Pollination
c) Fertilization
d) Maturation
Answer: d) Maturation
Explanation: After fertilization, the ovary undergoes maturation and develops into a fruit.
What is the term for the transfer of pollen grains by wind?
a) Wind pollination
b) Insect pollination
c) Self-pollination
d) Cross-pollination
Answer: a) Wind pollination
Explanation: Wind pollination occurs when pollen grains are carried by wind to reach the female reproductive structures of flowers.
Which of the following is not a floral adaptation to attract pollinators?
a) Brightly colored petals
b) Scented flowers
c) Nectar-producing glands
d) Bitter taste
Answer: d) Bitter taste
Explanation: Bitter taste is not a floral adaptation to attract pollinators. Flowers often use bright colors, scents, and nectar to attract pollinators.
What is the purpose of double fertilization in flowering plants?
a) To produce more pollen grains
b) To increase genetic diversity
c) To prevent self-pollination
d) To produce triploid endosperm
Answer: d) To produce triploid endosperm
Explanation : In flowering plants double fertilisation occurs when one sperm nucleus fuses with an egg cell to form the zygote and another sperm nucleus fuses with the central cell to form the triploid endosperm.
What is the name of the process in which seeds are dispersed away from the parent plant?
a) Germination
b) Pollination
c) Fertilization
d) Seed dispersal
Answer: d) Seed dispersal
What is the purpose of the seed coat in flowering plants?
a) Protection of the embryo
b) Absorption of water
c) Production of pollen grains
d) Attraction of pollinators
Answer: a) Protection of the embryo
Explanation : The seed coat provides protection to the embryo, inside the seed, shielding it from mechanical damage desiccation and pathogens.
What is the term for the process of a seed beginning to grow into a new plant?
a) Germination
b) Pollination
c) Fertilization
d) Maturation
Answer: a) Germination