Sexual Reproduction in Flowering Plants · Question 1

Which one of the following is a triploid cell ?

1. Synergid
2. Primary endosperm cell
3. Central cell
4. Zygote

Which one of the following types of pollination brings genetically different types of pollen grains to the stigma?

1. Geitonogamy
2. Xenogamy
3. Cleistogamy
4. Autogamy

Which of the following plants produces non-albuminous seeds?

1. Pea
2. Wheat
3. Maize
4. Barley

Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs?

1. Polar nucleus
2. Antipodals
3. Synergids
4. Central cells

If the diploid chromosome number of typical angiosperm is 36, what would be the chromosome number in its endosperm?

1. 72
2. 18
3. 36
4. 54

How many thecae are present in each lobe of a typical bilobed angiosperm anther?

1. 12
2. 2
3. 6
4. 8

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below :

1. A is true but R is false
2. A is false but R is true
3. Both A and R are true and R is the correct explanation of A
4. Both A and R are true but R is NOT the correct explanation of A

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below:

1. A is true but R is false
2. A is false but R is true
3. Both A and R are true and R is the correct explanation of A
4. Both A and R are true but R is NOT the correct explanation of A

How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant?

1. 1 Meiosis and 3 Mitosis
2. No Meiosis and 2 Mitosis
3. 2 Meiosis and 3 Mitosis
4. 1 Meiosis and 2 Mitosis

Given below are two statements : One is labelled as Assertion (A) and other is labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below:

1. A is true but R is false
2. A is false but R is true
3. Both A and R are true and R is the correct explanation of A
4. Both A and R are true but R is NOT the correct explanation of A