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WorksheetsGrade 12 -Chapter 1 : Reproduction in Organisms
Total questions: 15
Worksheet time: 5mins
Which of the following is a primate?
Rat
Horse
Chimpanzee
Mole
All of the following are pre-fertilization events except:
Spermatogenesis
Oogenesis
Gamete transfer
Embryogenesis
The fusion of male and female gametes in course of fertilization is called
Syngamy
Hologamy
Isogamy
Merogamy
______________ is an essential feature of sexual cycle.
Mitosis
Meiosis
Both mitosis and meiosis
None of the above
Thallus refers to
Gametes
Meiocytes
Male and female reproductive organs
Plant body
Which of the following statements about gametogenesis is FALSE ?
Production of diploid cells
Production of haploid cells
Seen in plants and animals
Mother cells are called as meiocytes.
Select the correctly matched pair:
Zoosopores : Penicillium
Gemmules : Sponges
Fission : Hydra
Fragmentation : Plasmodium
Dogs contain 78 chromosomes in their meiocytes. What will be the chromosome number in their gametes?
78
39
19.5
9
Clones are :
Only genetically similar to the parents
Only morphologically similar to their parent
Formed during asexual and sexual reproduction
Genetically and morphologically similar to the parents
Choose the right sequence of events:
Gametogenesis---embryogenesis---gamete transfer---syngamy
Syngamy---Gametogenesis---gamete transfer---embryogenesis
Gametogenesis---gamete transfer--- syngamy---embryogenesis
Embryogenesis---gametogenesis--- gamete transfer----syngamy
Earthworm is a ___________________organism.
unisexual
bisexual
unisexual and dioecious
Bisexual and monoecious
Oestrus cycle is seen in non-primate animals. Which of the following is true about it?
Seen in males and females
Occurs once in 28 days
Continuous Breeders
Has a specific phase for mating
Pollination is an example of:
Gamete transfer
Fertilization
Gametogenesis
Embryogenesis
Embryogenesis includes :
mitosis and meiosis
cell division and cell differentiation
all of the above
none of the above
Formation of hard calcareous eggs is a characteristic feature of :
Oviparous forms
Viviparous forms
Ovi-viviparous forms
None of the above
