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Answers
Answer:स्टोमेटा के छिद्रों का खुलना और बंद होना केवल गार्ड कोशिकाओं द्वारा नियंत्रित किया जाता है. ... पौधे की कोशिकाओं से स्टोमेटा के छिद्रों के माध्यम से बड़ी मात्रा में पानी निकलता है. इसलिए, जब पौधों को कार्बन डाइऑक्साइड की जरूरत नहीं होती है और पानी को संरक्षित करना चाहते है, तो स्टोमेटा के छिद्र बंद हो जाते हैं..............
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Explanation:
Hello dear ❤️
1} External fertilization is a case in which fusion of male and female gametes takes place in outside environment/ medium and not in the body of the female. for example, in case of frogs , fertilization takes place in water medium.
2}Difference Between Internal and External Fertilization
Listed below are some significant differences between internal and external fertilization
Internal Fertilization :
1.Fusion of gametes within the body of the female.
2.Lesser is released and deposited inside the body of the female.
3.Only male gametes are discharged into the female genital tract.
4.Inside the female body.
5. Viviparity
Oviparity
Ovoviviparity is it's type...
External fertilization:
1.Union of the gametes in an external environment(Water bodies).
2.Multiple gametes(both male and female) released into the external environment.
3. Both female and male gametes are discharged into the external surroundings.
4.Outside the body.
5.No types as such, external environment..
3}Offspring produced is identical to the parent because they are produced as clones. Types of asexual reproduction are as follows: fission, budding and fragmentation. A. Fission: This type is mainly seen in unicellular prokaryotes. A full-grown organism at a certain stage splits into two identical daughter organisms.
4}An unborn or unhatched offspring of a mammal, in particular an unborn human more than eight weeks after conception.
5}Metamorphosis is a biological process which involves sudden and abrupt changes in the body structure of the animal by cell growth and differentiation. It is generally observed in amphibians and insects. Examples: frogs and butterflies.
6}Oviparous and viviparous are such two methods. 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. This means oviparous animals lay eggs.
(sorry dear I can't give of Q. 7,8,9...)
10} 1.}Zygote:
1. A zygote is a fertilized egg formed by the fusion of the sperm and the egg.
2. A well-defined body is absent.
2} foetus:
1. A foetus is the stage of the embryo which shows all recognizable body parts of a mature organism.
2. Well-defined body parts are present..
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