CHAPTER 23: REPRODUCTION IN ORGANISMS

In oogamy, fertilization involves

In ginger, vegetative propagation occurs through

Which of the following pairs is not correctly matched?

Mode of reproduction-> Example

The process of series of changes from larva to adult after embryonic development is called

Which one of the following generates new genetic combinations leading to variation?

In a practical test, a student has to identify the organisms in which syngamy does not occur. In those organisms the female gamete undergoes development to form new organisms without fertilization. This phenomenon is called “X”. Identify the organisms and the phenomenon “X”

Which of the following statements is incorrect ?

(i)Bamboo species flower only once in their life time, generally after 50-100 years and produce large number of fruits and die.

(ii)In animals, the juvenile phase is followed by morphological and physiological changes prior to active reproductive behaviour.

(iii)The reproductive phase is of same duration in all organisms.

(iv)Juvenile phase is the period of growth between the birth of an individual till it reaches reproductive maturity.

Which reproductive adaptation is characteristic of most terrestrial vertebrates but not of most aquatic vertebrates?

Which one of the following statements is not correct?

What is common between vegetative reproduction and apomixis?

The statements given below describe certain features that are observed in the pistil of flowers.

(i)Pistil may have many carpels

(ii)Each carpel may have more than one ovule

(iii)Each carpel has only one ovule

(iv)Pistil have only one carpel Choose the statements that are true from the options below