- 1(current)
Q. No.A few statements describing certain features of reproduction are given below:
| i. | Gametic fusion takes place |
| ii. | Transfer of genetic material takes place |
| iii. | Reduction division takes place |
| iv. | Progeny has some resemblance with parents |
Select the options that are true for both asexual and sexual reproduction from the options given below:
| 1. | i and ii |
| 2. | ii and iii |
| 3. | ii and iv |
| 4. | i and iii |
Given below are a few statements related to external
fertilization. Choose the correct statements:
i. The male and female gametes are formed and
released simultaneously
ii. Only a few gametes are released into the medium
iii. Water is the medium in a majority of organisms
exhibiting external fertilization
iv. Offspring formed as a result of external
fertilization have better chance of survival than
those formed inside the organism
1. iii and iv
2. i and iii
3. ii and iv
4. i and iv
A few statements with regard to sexual reproduction are given below
| I. | Sexual reproduction does not always require two individuals. |
| II. | Sexual reproduction generally involves gametic fusion. |
| III. | Meiosis never occurs during sexual reproduction. |
| IV. | External fertilisation is a rule during sexual reproduction. |
Choose the correct statements from the options below.
1. l and lV
2. l and ll
3. ll and lll
4. l and lV
1. antheridial head on the male gametophyte in Marchantia
2. archegonial head on the female gametophyte in Marchantia
3. antheridial head on the sporophyte in Marchantia
4. archegonial head on the sporophyte in Marchantia
| COLUMN I | COLUMN II | ||
| A | Asexual reproductive structure in Penicillium | P | Conidia |
| B | Vegetative propagule in Agave | Q | Marchantia |
| C | Monoecious plant | R | Chara |
| D | Dioecious plant | S | Bulbil |
Codes:
| A | B | C | D | |
| 1. | P | S | Q | R |
| 2. | S | P | Q | R |
| 3. | P | S | R | Q |
| 4. | S | P | R | Q |
Reason(R): Higher plants show internal fertilisation.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): We see proper embryonic care and protection in the case of viviparous animals.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): There is the fusion of male and female gametes.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Seasonal breeders do wait for favorable seasons for reproduction.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
- 1(current)
Q. No.
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