Question

11. निम्नलिखित में अंतर स्पष्ट करें।
(क) अंड निषेचन एवं आंतरिक निषेचन
(ख) बाह्य निषेचन एवं आंतरिक निषेचन
(ग) समथैलसी एवं विषमथैलसी
(घ) एकलिंगी एवं द्विलिंगी
Differentiate between the following.
(a) Oviparous and viviparous
(b) External fertilization and internal fertilizatio
(c) Homothallus and heterothallus
(d) Unisexual and bisexual​

Answer 1

Answer:

ans a)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.

ans b) Complete answer: 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.

ans c) The main difference between homothallic and heterothallic is that homothallic is the condition of having both male and female reproductive structures on the same thallus whereas heterothallic is the condition of having male and female reproductive structures in different thalli

ans d) The main difference between unisexual and bisexual flowers is that unisexual flowers contain male and female reproductive organs in separate flowers whereas bisexual flowers contain both male and female reproductive organs in the same flower.