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What advantage over an aquatic organism does a terrestrial organism have the regard to obtaining oxygen for respiration ?

Posted by Rewati Raman 🤓🤓🤓 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 3 years, 1 month ago

Terrestrial organisms take up oxygen from the atmosphere whereas aquatic animals obtain oxygen from water. Air contains more O₂ as compared to water. Since the content of O₂ in air is high, the terrestrial animals do not have to breathe faster to get more oxygen. Therefore, unlike aquatic animals, terrestrial animals do not need adaptations for gaseous exchange.

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Neha did not wanted to have child .so she Want to doctor who suggested her to adapt contraceptive methods. What are the reason for adopting contraceptive methods?

Posted by Pankaj Maurya 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 3 years, 1 month ago

Contraceptive methods are mainly used for the following reasons: to prevent unwanted pregnancies. To control population growth or fertility. To prevent the transmission of sexually transmitted diseases.

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ANSWER

Function of male or female reproductive system

Posted by Pankaj Maurya 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 3 years, 1 month ago

The human male reproductive system consists of:

Testes - Are the primary reproductive organs in males which are in pair. These are oval shaped organs which lie outside the abdominal cavity. It makes the male *** cells called sperms and produces male *** hormones called testosterone. The testes are situated in the scrotal sac outside the main body cavity because the formation of sperms requires a lower temperature than the normal body temperature.
******* - Is a muscular pouch which houses the testes. It is present outside the abdominal cavity and maintains a lower temperature than the normal body temperature.
Epididymis - The sperms formed in the testes goes into a coiled tube called epididymis which stores the sperms temporarily.
Vas Deferens (sperm duct) - It is a long tube which carries the sperms from epididymis to another tube called urethra.
Seminal vesicles and prostrate gland - Both these glands are present along the path of vas deferens and add their secretions to sperms which allows them to transport easily.
***** - It is an organ which passés the sperms from the man's body into the ****** in the women's body during mating.

The secretions of seminal vesicles and prostrate gland provide nutrition to the sperms and also make their transportation easier by secreting a thick liquid.

A pair of Ovaries
- One on each side of uterus
- Produce female *** cell (ovum/ova)
- Secrete female hormones estrogen & progesterone
Fallopian tube
- Exist in pairs , originating from uterus extending up to each ovary
- Receives ovum from ovary
Uterus
- Pear-shaped muscular hollow structure
- Foetus develops here
Cervix
- Narrow lower part of uterus
******
- Tube like structure
- Sperm discharge occurs here
- Acts as birth canal

Conventional	Non- Conventional
1. Conventional sources of energy are non-renewable sources of energy.	1. Non-conventional sources of energy are renewable sources of energy.
2. These sources get depleted with its use.	2. These resources can be used again and again.
3. These are traditional sources of energy.	3. These are recently developed sources of energy.
4. These causes large scale pollution.	4. These are environment friendly resources.
5. For example : Coal, petroleum, diesel, etc.	5. For example: Solar energy, wind energy, tidal energy etc.

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