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Published on: 24/05/2021
QB365 Provides the updated NCERT Examplar Questions for Class 12 Biology, and also provide the detail solution for each and every ncert examplar questions , QB365 will give all kind of study materials will help to get more marks
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Questions + Answers key
Take MCQ Biology Test1.
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
nodes are shorter than internodes
nodes have meristematic cells
nodes are located near the soil
nodes have non-photosynthetic cells
2.
Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because
sexual reproduction is a lengthy process
gametes of parents have qualitatively different genetic composition
genetic material comes from parents of two different species
greater amount of DNA is involved in sexual reproduction.
3.
A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has
haploid vegetative cells and diploid gametangia
diploid vegetative cells and diploid gametangia
diploid vegetative cells and haploid gametangia
haploid vegetative cells and haploid gametangia
4.
Banana is vegetatively propagated by
tubers
rhizomes
bulbs
suckers
5.
Which one of the following processes results in the formation of clone of bacteria?
Transformation
Transduction
Binary Fission
Conjugation
6.
Vegetative propagation in Pistia occurs by
Stolon
Offset
unner
Sucker
7.
Identify the correct statement.
In sexual reproduction, the offspring produced are morphologically and genetically identical to the parent
Zoospores are sexual reproduction structures
In sexual reproduction, a single parent produces offspring with or without the formation of gametes
Conidia are asexual structures in Penicillium.
8.
There are various types of reproduction. The type of reproduction adopted by an organism depends on:
The habitat and morphology of the organism
Morphology of the organism
Morphology and physiology of the organism
The organism's habitat, physiology and genetic makeup
9.
Choose the correct statement from amongst the following:
Dioecious (hermaphrodite) organisms are seen only in animals.
Dioecious organisms are seen only in plants
Dioecious organisms are seen in both plants and animals
Dioecious organisms are seen only in vertebrates
10.
Offsprings formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because:
Sexual reproduction is a lengthy process
Gametes of parents have qualitatively different genetic composition
Genetic material comes from parents of two different species
Greater amount of DNA is involved in sexual reproduction.
1.
(b)
nodes have meristematic cells
2.
(b)
gametes of parents have qualitatively different genetic composition
3.
(d)
haploid vegetative cells and haploid gametangia
4.
(b)
rhizomes
5.
(c)
Binary Fission
6.
(a)
Stolon
7.
(b)
Zoospores are sexual reproduction structures
8.
(d)
The organism's habitat, physiology and genetic makeup
9.
(c)
Dioecious organisms are seen in both plants and animals
10.
(b)
Gametes of parents have qualitatively different genetic composition
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