4. Can animals produce offsprings even without formation of zygotes, how? Explain
with suitable example. (ASI)
5. How can you identify the animal is viviparous or oviparous. (AST)
6. Who am I? (ASI)
a) I am formed by the fusion of male and female gametes...
b) I am a gamete that has a tail and travel to fuse with female gamete...
c) I am a fully developed embryo inside a mother's body...
7. State the reason why most of the terrestrial animals' fertilsation takes plac
internally. (ASI)
8. Observe the following figures and write their functions of them. (ASI)
Answers
Answer:
4.
Explanation:
Producing offspring without zygote formation is definitely possible. The process is call parthenogenesis. -In this process, an egg develops into an offspring on its own. - It is a form of asexual reproduction takes place in some animals and plants.
5.Viviparous are the animals which give birth to the young ones, and their development occurs inside the female body (mother's womb). Oviparous are known to lay eggs, which can be fertilized or unfertilized. Viviparous animals directly give birth to the young ones.Oct 6, 2018
6.a.zygote
b.sperm
c.foetus
7.Internal fertilization takes place inside the body of the female. It is necessary for animals which live on land (terrestrial animals) and is retained by aquatic animals descended form terrestrial ancestors eg whales and dolphins. External fertilization takes place outside the body of the female.
8.Monocot-(Top row)
Embryos have one cotyledon.
For leaves, the veins are usually parallel.
Stems vascular bundles usually complexly arranged.
They have a fibrous root system.
Floral parts usually in multiples of three.
Dicot-(Bottom row)
Embryos have two cotyledons.
For leaves, the veins are usually net-like.
Stems vascular bundles usually arranged in a ring.
They have a taproot system.
Floral parts usually in multiples of four or five.