Chapter 2: Plant Kingdom — Online MCQ Test
BOTANY · CLASS 11th · Tamil Nadu State Board
Practice Chapter 2: Plant Kingdom with a free chapter-wise online MCQ test.
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....
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Chapter 2: Plant Kingdom — Important Questions & Answers
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.
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.
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.
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.
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.
In gymnosperms like Pinus, when both male and female strobili (cones) are present on the same individual plant, it is termed monoecious.