Question

Examine the figures (A-D) given below and select the right option out of 1-4, in which all the four structures A, B, C and D are identified correctly

• A. A- Runner, B- Archegoniophore, C- Synergid, D- Antheridium
• B. A- Offset, B- Antheridiophore, C- Antipodals, D- Oogonium
• C. A- Sucker, B- Seta, C- Megaspore mother cell, D- Gemma cup
• D. A- Rhizome, B- Sporangiophore, C- Polar cell, D- Globule

Answer 1

The correct option is B A- Offset, B- Antheridiophore, C- Antipodals, D- Oogonium

• Offset is a short, thick branch that produces a new plant at its tip. It is produced asexually. It grows from the main stem of the parent plant.
• Antheridiophore is a gametophore that bears the antheridia only. It is an outgrowth of a prothallus. It is seen in liverworts.
• Antipodal cells are haploid cells found in the embryo sac of angiosperms. These are present at the chalazal end farthest from the micropyle. It nourishes the embryo.
• Oogonium is the female sex organ. It contains one or more oospheres. It grows out from one of the nodes.

Thus, the correct answer is option B.