Question

Write location and function of
a. Placenta
b. Thalamus
c. Anther
d. Stigma

Answer 1

Answer:

Placenta:

• It is a unique organ found in mammals.
• It is a link between mother and fetus.
• It helps in the transportation of nutrients and oxygen from mother to fetus.
• It carries out waste materials from the baby's blood.
• It is present in uterus of mother during pregnancy.

Thalamus:

• It is an egg shaped organ present at the center of the brain.
• It is located at the dorsal part of the brain.
• It regulates the levels of consciousness.
• Here, sensory nerves transmit signals from spinal cord to the brain stem.
• It relays the information.

Anther:

• It is a part of stamen which is the male reproductive part of the plant.
• It is two lobed.
• Each lobe contains two pollen sacs which contain pollen grains.
• It is located at thr top of the filament of stamen.
• It holds the pollen grains which are necessary for reproduction.

Stigma:

• It is a sticky knob present at the top of the pistill which is a female reproductive part.
• It attracts pollen grains from air which get sticked to it.
• It contains male germ cell which enables reproduction.
• It can be hairy or sticky.
• We can call it a pollen receptor.

Answer 2

Answer:

Explanation:

(a) Placenta:

Location: Cushion or swollen region in the ovary

Function: Gives origin to ovules  i.e renders origination to ovules

(b) Thalamus:

Location: Tip of the flower stalk  

Function: Bears all the parts of the flower

(c) Anther:

Location: Part or section of the stamen  

Function: Produces male gametes or pollen grains

(d) Stigma:

Location: Terminal knob-like part or structure

Function: Serves as the landing place for pollen grains during pollination

I HOPE IT HELP YOU *****