- Autotrophic plants
- Herbivores
- Carnivores
- Decomposers
- Gills of prawn and lungs of cow
- Wings of pigeons and wings of bat
- Flippers of dolphin and legs of rabbit
- Thorns of bougainvillea and tendrils of cucurbita
- Intra uterine devices -Increase phagocytosis of sperms suppress sperm motility and fertilizing capacity of sperms.
- Hornmonal contraceptives-prevent/ retard entry of sperms, prevent ovulation and fertilization
- Vasectomy – Prevents spermatogenesis
- Barrier Methods- Prevent fertilization
- A and D
- B and C
- C and A
- D and E
- Egg nucleus and secondary nucleus
- Megaspore mother cell and antipodal cells
- Egg cell and antipodal cells
- Nucellus and antipodal cells.
- simple diffusion
- facilitated diffusion
- passive transport
- none of the above
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