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Reproduction In Organisms

Question
CBSEENBI12000954
Wired Faculty App

Define
(i) Juvenile phase
(ii) Reproductive phase
(iii) Senescent phase.

Solution

(i) Juvenile phase. The period of growth in life of organisms before they start reproducing sexually and attain a level of maturity is called juvenile phase. It is known as Vegetative phase in plants.

(ii) Reproductive phase. The period of active reproductive behaviour when the organisms show marked morphological and physiological changes is called reproductive behaviour. It is followed by senescence phase.

(iii) Senescence phase. The period when the reproductive phase ends and concomitant changes occur in the body such as slowing of metabolism is called senescence phase. It is the last phase when the organism grows old and it is followed by death.

Some More Questions From Reproduction in Organisms Chapter

Bryophyllum is vegetatively propagated by :

Which is having menstrual cycle ?

Which is male accessory duct ?

Which of the following is having oestrous cycle ?

 Which of the following is bisexual ?

 Frog is ................... while human female is ....................

Testes lie in ................... while ovaries lie in ....................

 In Rhizopus, asexual reproduction takes place  by...................formation.

....................in Penicillium are formed on conidiophores.

In sweet potato, vegetative propagation takes place through............

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