Answer:
Gametogenesis is the formation of gametes, in males it is referred as spermatogenesis and in females it is called oogenesis.
Explanation:
Differences between spermatogenesis and oogenesis:
1. Spermatogenesis is formation of sperms from spermatogonia and oogenesis is formation of ova from oogonium.
2. Location: Production of sperms occur in testis and production of ova occurs in ovaries.
3. In males, spermatogenesis begins at puberty and its a continuous process till death whereas in females, oogenesis begins at fetal stages, it halts and rest of the process occurs after puberty till menopause.
4. Primary spermatocyte undergoes meiosis-I to form two secondary spermatocytes, whereas primary oocyte undergoes to M-I to form a single secondary oocyte with a polar body.
5. Meiosis-II results in the formation of 4 spermatids or spermatozoa, in females however M-II results in only one ovum and second polar body formation.
6. Overall we can say that single spermatogonium forms 4 spermatids whereas single oogonium forms only 1 ovum.
7. Sperms are motile where as ovum in non-motile.
Answer:
Climate‐change‐induced shifts in plant species distributions are changing the characteristics of biomes (ecosystems with the same dominant plant life‐forms), altering structure and ecosystem functioning.
The correct answer is carbon dioxide and oxygen
#3: How Long is a Lunar Month? A lunar month takes about 29 - 30 Days.
#5: How Many Phases Does the Moon Have?? The moon has 4 lunar phases that last approximately a week (7 Days).
Answer:
Solid: Compact particles; no movement
Liquid: Particles can move but in a limited space
Gas: Rapid moving particles that move almost freely
Explanation: