Question

Differentiate between: (AS1)
a) Sexual reproduction and asexual
reproduction
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b) Gametes and zygote
c) External fertilization and internal fertilization
d) Viviparous and oviparous animals​

Answer 1

Answer:

a) Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.

b) "Gametes" are specifically sex cells that have 23 chromosomes. "Diploid" refers to any cell that has all 46 chromosomes. "Zygote" is the result of two gamete (haploid) cells fusing, and becoming a diploid cell.

c) Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies.

d) The main difference between oviparous and viviparous animals is that oviparous animals do not undergo any embryonic development inside the mother whereas viviparous animals develop into a young animal inside the mother. ... In contrast, viviparous animals are born as live young individuals. Therefore, they do not lay eggs.

Explanation:

Hope it helps you have a great day :-))

Answer 2

a) Sexual reproduction

1. involves male and female organisms
2. Gametes are formed
3. GAmetes are Fused
4. Zygote is formed
5. offsprings are not  identical

Asexual Reroduction

1. involves a single organism
2. no production of gametes
3. no fusion
4. no zygote  formation
5. young ones are identical

b) Gametes

1. are of two types
2. are hapliod
3. produced in reproductive organs
4. produce zygote

Zygote

1. fusion of gametes form zygote
2. are dipolid
3. produced by fusion of gametes
4. develops as embryo

c) External fertilisation

1. takes place outside the  body
2. no security to zygotes
3. generally takes place in water
4. example : Fish and Frog

INternal fertilization

1. takes place inside the females body
2. zygote has security for external factors
3. takes placce in oviduct
4. Example: mammals & fish

d) Viviparous animals

1. give birth to young ones
2. internal fertilization

Oviparous animals

1. lay eggs in reproduction
2. internal or external fertilization