How do Organisms Reproduce? MCQs

Q1. Consider the following statements about sexual reproduction in flowering plants: (I) The anther produces pollen. (II) The ovule becomes a seed after fertilisation. (III) Pollination is the fusion of gametes. Which of the above statement(s) is/are correct?

• A.None of these
• B.Only I
• C.Only III
• D.Only I and II

Answer: D. Only I and II

The principle at play: An ionic bond forms when a metal donates electrons to a non-metal: e.g. Na -> Na+ + e-, Cl + e- -> Cl-, and Na+ + Cl- -> NaCl; the resulting solid is held by strong electrostatic attraction => this fixes the property asked in the stem; hence the answer = Only I and II. Connecting concept to answer: Correct. Eliminating the rest: option A) 'None of these' misses the point - Re-check each statement individually; option B) 'Only I' fails since Re-check each statement individually; option C) 'Only III' fails since Re-check each statement individually. Consequently the correct option is D) Only I and II.

Q2. While dissecting a hibiscus bloom for a school project, Aanya finds a knob-like sac at the tip of a slender stalk that bursts open to release a fine yellow powder; which structure has she located?

• A.Ovary
• B.Stigma
• C.Anther
• D.Filament

Answer: C. Anther

Pollen grains are produced inside the pollen sacs of the anther, the swollen terminal part of the stamen. The anther is therefore the pollen-producing organ.

Q3. A beekeeper notices her bees return with golden dust packed on their legs after probing inside a sunflower; from which floral organ did the bees collect this powder?

• A.Stigma
• B.Ovary
• C.Filament
• D.Anther

Answer: D. Anther

Pollen grains are produced inside the pollen sacs of the anther, the swollen terminal part of the stamen. The anther is therefore the pollen-producing organ.