Question

Although sexual reproduction is a long drawn, energy-intensive complex form of reproduction, many groups of organisms in kingdom- Animalia and Plantae prefer this mode of reproduction. Give atleast three resaons for this.

Answer 1

(a) Sexual reproduction brings about variation in the offspring
(b) Since gamete formation is preceded by meiosis, genetic recombination
occurring during crossing over (meiosis - ). leads to a great deal variation in the DNA of gametes.
(c) The organism has better chances survival in a changing environment Embryo sacs of some apomictic species appear normal but conta diploid cells. Suggest a suitable explanation for the condition.