The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because:
1. | Offspring do not possess exact copies of parental DNA |
2. | DNA of only one parent is copied and passed on to the offspring |
3. | Offspring are formed at different times |
4. | DNA of the parent and offspring are completely different. |
Asexual method of reproduction by binary fission is common to which of the following?
1. | Some eukaryotes |
2. | All eukaryotes |
3. | Some prokaryotes |
4. | All prokaryotes |
Choose the correct option from the following:
1. | i and ii | 2. | ii and iii |
3. | i and iii | 4. | iii 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 |
1. | i and iv | 2. | i and ii |
3. | ii and iii | 4. | i and iii |
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because:
1. | Nodes are shorter than internodes |
2. | Nodes have meristematic cells |
3. | Nodes are located near the soil |
4. | Nodes have non-photosynthetic cells |
Which of the following statements supports the view that elaborate sexual reproductive processes appeared much later in organic evolution?
i. | Lower groups of organisms have a simpler body design |
ii. | Asexual reproduction is common in lower groups |
iii. | Asexual reproduction is common in higher groups of organisms |
iv. | The high incidence of sexual reproduction in angiosperms and vertebrates |
1. | i, ii, and iii | 2. | i, iii, and iv |
3. | i, ii, and iv | 4. | ii, iii, and iv |
Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because:
1. | Sexual reproduction is a lengthy process |
2. | Gametes of parents have a qualitatively different genetic composition |
3. | Genetic material comes from parents of two different species |
4. | Greater amount of DNA is involved in sexual reproduction |
There are various types of reproduction. The type of reproduction adopted by an organism depends on:
1. | The habitat and morphology of the organism |
2. | Morphology of the organism |
3. | Morphology and physiology of the organism |
4. | The organism’s habitat, physiology, and genetic makeup |
Identify the incorrect statement :
1. | In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent |
2. | Zoospores are sexual reproductive structures |
3. | In asexual reproduction, a single parent produces offspring with or without the formation of gametes |
4. | Conidia are asexual structures in Penicillium |
Match the asexual reproductive structure in COLUMN I with organisms in COLUMN II and select the correct option from the codes given:
|
COLUMN I |
|
COLUMN II |
A. |
Zoospore |
a. |
Penicillium |
B. |
Conidia |
b. |
Chlamydomonas |
C. |
Buds |
c. |
Sponge |
D. |
Gemmule |
d. |
Hydra |
Options: | (A) | (B) | (C) | (D) |
1. | a | b | c | d |
2. | d | c | b | a |
3. | c | d | a | b |
4. | b | a | d | c |
Match vegetative propagules in COLUMN I with plants in COLUMN II and select the correct option from the codes given:
|
COLUMN I |
|
COLUMN II |
A. |
Rhizome |
a. |
Bryophyllum |
B. |
Bulbil |
b. |
Eichhornia |
C. |
Leaf buds |
c. |
Ginger |
D. |
Offset |
d. |
Agave |
Options: | (A) | (B) | (C) | (D) |
1. | a | b | c | d |
2. | d | c | b | a |
3. | c | d | a | b |
4. | b | a | d | c |