MEDIUM
12th ICSE
IMPORTANT
Earn 100

What are the various natural methods of vegetative propagation?

Important Questions on Reproduction in Organisms

MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 1 - Reproduction in Organisms>Chapter Practice>Q 22
Coconut palm is monoecious while the date is dioecious. Why are they called so?
HARD
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 1 - Reproduction in Organisms>Chapter Practice>Q 23
The embryonal protection and care are comparatively better in viviparous species than oviparous organisms. Explain.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 1 - Reproduction in Organisms>Chapter Practice>Q 24
If the chromosome number in meiocytes of human beings, housefly, potato, apple, dog, and maize are 46,12,48,34, 78, and 20, respectively. What will be the chromosome numbers in gametes of these species?
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 1 - Reproduction in Organisms>Chapter Practice>Q 25
It is generally observed that the number of male gametes produced is several thousand times the number of female gametes. Explain.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 1 - Reproduction in Organisms>Chapter Practice>Q 26
Parthenocarpy does not involve fusion of gametes yet it leads to production of fruits. How?
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 1 - Reproduction in Organisms>Chapter Practice>Q 27
What is the ploidy of the embryo and tissues in the ovary?
HARD
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 1 - Reproduction in Organisms>Chapter Practice>Q 28
What are the major events of sexual reproduction? Describe them in sequential order.