Advertisements
Advertisements
Question
Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?
Advertisements
Solution 1
Moss plants produce a large number of male gametes to increase the chances of fertilisation, as the eggs are located in the archegonium and the male gametes have to swim in water to reach the eggs for fertilisation to occur. The male gametes are called antherozoids.
Solution 2
Moss plants produce a very large number of male gametes because the male gametes need to move through a moist environment to reach the egg for fertilization. Many male gametes fail to reach the egg, so producing them in large numbers compensates for this loss. These male gametes are called antherozoids.
APPEARS IN
RELATED QUESTIONS
Describe the characteristic features of wind pollinated flowers.
What is meant by emasculation?
Give the floral adaptations for anemophily.
Name two characteristics of flowers in which pollination occur by wind.
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
Name of the part of the ovary which gives rise to:
Fruit ______
When maturation time of reproductive parts in a flower is different.
Give one word/term for the following:
Pollination of flowers by birds.
Mention any two contrivances in flowers which favour cross-pollination.
- Nucellus
- Antipodals
- Synergids
- Micropyle
Choose the correct statement from the following.
Wind pollination is common in ______.
A dioecious flowering plant prevents both ______.
Which of the following pair has haploid structures?
Both chasmogamous and cleistogamous flowers are present in ______.
Heterostyly as a contrivance for cross-pollination is found in ______.
Advantage of cleistogamy is:
In which one of the following pollination is autogamous?
What is hypohydrophily?
