Chapter Exam

Chapter 2: Plant Kingdom — Online MCQ Test

Q: Which group of plants is commonly referred to as the 'amphibians of the plant kingdom'?

Answer: B. Bryophytes — Bryophytes are called amphibians because they require water to complete their life cycle, specifically for the fertilization of gametes.

Q: Agar-agar is commercially obtained from which of the following algae?

Answer: A. Gelidium and Gracilaria — Agar-agar is a phycocolloid extracted from the red algae Gelidium and Gracilaria, widely used in microbiological labs.

Q: In the alternation of generations, the sporophyte is diploid and the gametophyte is:

Answer: B. Haploid — The sporophyte produces spores via meiosis, which germinate to form the haploid gametophytic generation.

Q: Consider a plant where the male and female cones are borne on the same tree; what term describes this condition?

Answer: B. Monoecious — In gymnosperms like Pinus, when both male and female strobili (cones) are present on the same individual plant, it is termed monoecious.

BOTANY · CLASS 11th · Tamil Nadu State Board

Practice Chapter 2: Plant Kingdom with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th BOTANY. This chapter covers: Focusing on plant classification this chapter covers algae bryophytes pteridophytes gymnosperms and angiosperms. Students study life cycles alternation of generations structural tr.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 2: Plant Kingdom — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th BOTANY — Chapter 2: Plant Kingdom, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which group of plants is commonly referred to as the 'amphibians of the plant kingdom'?

A. Algae
B. Bryophytes ✓
C. Pteridophytes
D. Gymnosperms

Answer: B. Bryophytes
Bryophytes are called amphibians because they require water to complete their life cycle, specifically for the fertilization of gametes.

Agar-agar is commercially obtained from which of the following algae?

A. Gelidium and Gracilaria ✓
B. Chlamydomonas and Volvox
C. Sargassum and Laminaria
D. Ectocarpus and Dictyota

Answer: A. Gelidium and Gracilaria
Agar-agar is a phycocolloid extracted from the red algae Gelidium and Gracilaria, widely used in microbiological labs.

In the alternation of generations, the sporophyte is diploid and the gametophyte is:

A. Diploid
B. Haploid ✓
C. Triploid
D. Polyploid

Answer: B. Haploid
The sporophyte produces spores via meiosis, which germinate to form the haploid gametophytic generation.

Compare the gametophytes of bryophytes and pteridophytes: which statement is correct?

A. Bryophyte gametophytes are photosynthetic and independent, while pteridophyte gametophytes are not
B. Both are fully dependent on the sporophyte for nutrition
C. Bryophyte gametophyte is the dominant phase, whereas the pteridophyte gametophyte is small and often inconspicuous ✓
D. Pteridophyte gametophytes are large and dominant while bryophyte gametophytes are reduced

Answer: C. Bryophyte gametophyte is the dominant phase, whereas the pteridophyte gametophyte is small and often inconspicuous
In bryophytes, the gametophyte is the main, long-lived phase, while in pteridophytes, the gametophyte (prothallus) is short-lived and small.

Consider a plant where the male and female cones are borne on the same tree; what term describes this condition?

A. Dioecious
B. Monoecious ✓
C. Heterosporous
D. Homosporous

Answer: B. Monoecious
In gymnosperms like Pinus, when both male and female strobili (cones) are present on the same individual plant, it is termed monoecious.

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