1
Question
Water is not required in the fertilization of
Water is not required in the fertilization of
Open in App
Solution
The correct option is C Pisum/ Maize
- Dryopteris and Selaginella are Bryophytes. Bryophytes require water for fertilization because their gametes are released in water, thus, fusion occurs inside the water and a diploid zygote is formed which then develops into a sporophyte.
- Vallisneria is a submerged hydrophyte. In Vallisneria, the male flowers detach on maturity and float on the surface of the water while the female flowers grow under water and they come up to the surface with the help of their thin long stalk. As the stalk grows further, the flowers which were vertical become horizontal and thus, a cup-like depression is formed around the female flower. The male flowers which are floating on the surface of the water, fall into the cup and due to jerk, the anthers dehisce and pollens are transferred to the stigma and thus, pollination occurs on the surface of the water.
- Pisum or the pea plant is a bisexual plant having male and female flowers on the same plant. Thus, self-pollination occurs in pea plant.
- Maize which is also known as Corn plant is pollinated by wind. The anthers are born in long tassels that move with the wind and shake off their pollen. The stigma is feathery and hairy so as to catch the wind-borne pollen. Thus, in Maize, pollens are transferred from the anthers of one plant to the stigma of another plant by means of wind i.e. cross-pollination occurs by the wind.
- Hence, water is not required for the fertilization of Pisum and Maize. So, the correct answer is D.
- Dryopteris and Selaginella are Bryophytes. Bryophytes require water for fertilization because their gametes are released in water, thus, fusion occurs inside the water and a diploid zygote is formed which then develops into a sporophyte.
- Vallisneria is a submerged hydrophyte. In Vallisneria, the male flowers detach on maturity and float on the surface of the water while the female flowers grow under water and they come up to the surface with the help of their thin long stalk. As the stalk grows further, the flowers which were vertical become horizontal and thus, a cup-like depression is formed around the female flower. The male flowers which are floating on the surface of the water, fall into the cup and due to jerk, the anthers dehisce and pollens are transferred to the stigma and thus, pollination occurs on the surface of the water.
- Pisum or the pea plant is a bisexual plant having male and female flowers on the same plant. Thus, self-pollination occurs in pea plant.
- Maize which is also known as Corn plant is pollinated by wind. The anthers are born in long tassels that move with the wind and shake off their pollen. The stigma is feathery and hairy so as to catch the wind-borne pollen. Thus, in Maize, pollens are transferred from the anthers of one plant to the stigma of another plant by means of wind i.e. cross-pollination occurs by the wind.
- Hence, water is not required for the fertilization of Pisum and Maize. So, the correct answer is D.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
