Related InterviewSolutions

• The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall beA. 20B. 10C. 40D. 15
• Identify the incorrect statement.A. In asexual reproduction, the offspring produced are morphologically and genetically identical to the parentB. Zoospores are sexual reproductive structuresC. In asexual reproduction, a single parent produces offspring with or without the formation of gametesD. Conidia are asexual structures in Penicillium
• Choose the correct statement from amongst the following.A. Dioecious (hermaphrodite) organismsare seen only in animalsB. Dioecious organisms are seen only in plantsC. Dioecious organisms are seen in both plants and animalsD. Dioecious organisms are seen only in vertebrates
• 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 hasA. haploid vegetative cells and diploid gametangiaB. diploid vegetative cells and diploid gametangiaC. diploid vegetative cells and haploid gametangiaD. haploid vegetative cells and haploid gametangia
• Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction becauseA. sexual reproduction is a lengthy processB. gametes of parents have qualitatively different genetic compositionC. genetic material comes from parents of two different speciesD. greater amount of DNA is involved in sexual reproduction.
• A few statements with regard to sexual reprodction 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 option below.A. I and ivB. I aand iiC. ii and iiiD. I and iv
• 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 have some resemblance with parents. Select the options that are true for both asexual and sexual reproduction from the options given below.A. I and iiB. ii and iiiC. ii and ivD. I and iii
• The statements given below descibe certain features that are observed in the pistil of flowers. (i) Pistil may have many carpels. (ii) Each carpel may have more than one ovule. (iii) Each carpel has only one ovule. (iv) Pistil have only one carpel.A. I and iiB. I and iiiC. ii and ivD. iii and iv
• Given below are a few statements related to exgternal fertilisation. 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 fertilisation. (iv) Offspring formed as a result of external fertilisation have better chance of survival than thos formed inside an organism.A. iii and ivB. I and iiiC. ii and ivD. I and iv