Question

Q1

In a flowering plant, the eggs are produced by meiosis in the _____ and the male gametophyte is produced by the _____.

A stamen ... stigma

B ovule ... carpel

C ovule ... anther

D stigma ... sepal

Q2

The only difference between monocots and dicots is the number of cotyledons they produce.

True

False

Q3

How is the development of a female gametophyte similar to the development of the egg in a human female.

A they both begin with four cells but end with only one

B they are both necessary for pregnancy and birth

C they both require nine months to develop

D none of the responses are correct

Q4

Plants resemble humans in that they require some essential elements to maintain good health.

True / false

Cabbages are biennial plants that produce a head the first year and a flowering stalk the second. The growth of the stalk called "bolting" involves rapid elongation of an already formed stem. Which of the following substances is likely to be immediately responsible for inducing bolting?

A cytokinin

B gibberellin

C Abscisic acid

D phytochrome

Answer 1

Q1. Correct option: (C) ovule ... anther

The ovule is the female reproductive part and the anther which is attached at the top of stamen is a part of the male reproductive organ.

Q2. False

Some of the other differences include:

Monocots	Dicots
Monocots exhibit fibrous root system	Dicots show tap root system
Vascular bundles of monocots are scattered throughout the stem	Vascular bundle of dicots are arranged in rings
Monocot leaves have parallel veins	Dicot leaves have veins in a branching pattern

Q3. Correct option: (A) they both begin with four cells but end with only one

A diploid primordial oocyte undergoes meiosis to produce four cells. Although this happens over a long period of time from the fetal age to up to about menopause, nevertheless it is part of the process. Out of these four cells, three are smaller cells called "polar bodies" and are destined for destruction. Similarly, in a megaspore with one nuclues give rise to 4 cells at first before ultimately nominating only one cell as female ovum.

Q4. True

Essential elements are those that cannot be synthesized in the body, but are required for health. Carbon, iron, nitrogen, oxygen etc. are some of the many elements required by both plants and animals.

Q5. Correct option: (B) gibberellin

Gibberalin is a family of related hormones named, GA-1, GA-3 etc. They primarily induce bolting by promoting cell elongation.