Choose the correct statement from amongst the following: Option 1 : Dioecious (hermaphrodite) organisms are seen only in animals.Option 2 : Dioecious organisms are seen only in plants.Option 3 : Dioecious organisms are seen in both plants and animals.Option 4 : Dioecious organisms are seen only in vertebrates.
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There is no natural death in single celled organisms like Amoeba and bacteria because Option 1 : They cannot reproduce sexually.Option 2 : They reproduce by binary fission.Option 3 : Parental body is distributed among the offspring.Option 4 : They are microscopic.
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Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction becausec Option 1 : Sexual reproduction is a lengthy process.Option 2 : Gametes of parents have qualitatively different genetic composition.Option 3 : Genetic material comes from parents of two different genetic compositions.Option 4 : Greater amount of DNA is involved in
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because Option 1 : Nodes are shorter than internodesOption 2 : Nodes have meristematic cellsOption 3 : Nodes are located near the soilOption 4 : Nodes have non-photosynthetic cells
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively Option 1 : 12, 24, 12Option 2 : 24, 12, 12Option 3 : 12, 24, 24Option 4 : 24, 12, 24
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
A multicellular, filamenteous 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 Option 1 : Haploid vegetative cells and diploid gametangiaOption 2 : Diploid vegetative cells and diploid gametangiaOption 3 : Diploid vegetative cells and haploid gametangiaOption 4
Amoeba and Yeast reproduce asexually by fission and budding respectively, because they are Option 1 : Microscopic organismsOption 2 : Heterotrophic organismOption 3 : Uninucleate organismsOption 4 : Unicellular organisms
A few statements describing certain features of reproduction are given below. Select the options that are true for both sexual and asexual reproduction from the options given: i. Gametic fusion takes place.ii. Transfer of genetic material takes place.iii. Reduction division takes place.iv. Progeny have some resemblance with parents. Option 1 : i and iiOption 2
The term ‘clone’ cannot be applied to an offspring formed by sexual reproduction because Option 1 : Offspring do not possess exact copies of parental DNA.Option 2 : DNA of only one parent is copied and passed on to the offspring.Option 3 : Offspring are formed at different times.Option 4 : DNA of parent and
The term ‘clone’ cannot be applied to an offspring formed by sexual reproduction because Read More »
