Entrance

Pollen grains are Option 1 : SphericalOption 2 : OvalOption 3 : Generally sphericalOption 4 : Irregular

The anther in transverse section appears to be Option 1 : UnilobedOption 2 : DiagonalOption 3 : TetragonalOption 4 : Mosaic

Whorl of sepals in flower represents Option 1 : AndroeciumOption 2 : GynoeciumOption 3 : CalyxOption 4 : Corolla

Biologists consider flowers to be objects of Option 1 : Embryological marvelsOption 2 : Sites of sexual reproductionOption 3 : Morphological marvelsOption 4 : All of these

Identify the incorrect statement. Option 1 : In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent.Option 2 : Zoospores are sexual reproductive structures.Option 3 : In asexual reproduction, a single parent produces offspring with or without the formation of gametes.Option 4 : Conidia are asexual structures in structures.

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

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

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