Question

Select the true statement for reproduction. I. It is not an all-exclusive defining characteristic of living organisms II. It is not an all-
inclusive defining characteristic of living organisms III. It is an all-inclusive defining characteristic of plants and fungi only IV.
Photoperiod affects reproduction in seasonal plant breeders only. V. Photoperiod affects reproduction in seasonal breeders both
plants and animals VI. Photoperiod has no role in reproduction
OA) II and V
OB) III and IV
OC) IV and VI
OD) All are correct​

Answer 1

Answer:

option b

Explanation:

Answer 2

The true statements are:

II. It is not an all-inclusive defining characteristic of living organisms.

V.Photoperiod affects reproduction in seasonal breeders, both plants and animals.

(option A)

Is reproduction a defining characteristic of a living organism?

• Reproduction is not an all-inclusive defining characteristic of living organisms.
• This is so because not all living organisms cannot reproduce.
• Some couples cannot conceive due to infertility.
• Other examples include sterile hybrids (mule, hinny), worker bees, etc.

What is photoperiodism?

• Photoperiodism refers to the "physiological changes in an organism, as a response to the length of darkness/light it is exposed to."
• It is shown by both plants and animals, which are seasonal breeders.
• The most accepted theory is that a photoperiod affects the melatonin levels in an organism, which affects the gonadotropin levels in turn.
• Based on photoperiodism effects, breeders can be divided into "long-day" breeders and "short-day" breeders.

Thus, the correct option is A) II and V