Plant Kingdom Questions and Answers Part-19

1. Sporophyte, dominant, photosynthetic and independent phase of plant represents
a) Haplontic
b) Diplontic
c) Diplohaplontic life cycle
d) Both (b) and (c)

Answer: b
Explanation: Diplontic

2. Diplontic life cycle is seen in
a) Angiosperms and gymnosperms
b) Spermatophytes
c) Both (a) and (b)
d) Pteridophyte

Answer: c
Explanation: Both (a) and (b)

3. When both the phases of life cycle are multicellular, i.e., haploid and diploid phases are more than one celled
a) Life cycles are called haplodiplontic
b) They differ in the dominant phase
c) They are in pteridophytes and bryophytes
d) All of these

Answer: d
Explanation: All of these

4. In bryophytes
a) Dominant, diploid, multicellular sporophyte alters dominant with multicellular gametophytes.
b) Dominant haploid multicellular gametophyte alters with diploid sporophyte.
c) The plant body shows diplontic life cycle.
d) The plant body shows haplontic life cycle.

Answer: b
Explanation: Dominant haploid multicellular gametophyte alters with diploid sporophyte.

5. Most of the alga show
a) Haplontic life cycle
b) Diplontic life cycle
c) Haplodiplontic life cycle
d) None of these

Answer: a
Explanation: Haplontic life cycle

6. Algae showing haplodiplontic life cycle are
a) Spirullina and spirogyra
b) Ectocarpus and polysiphonia
c) Kelps
d) Both (b) and (c)

Answer: d
Explanation: Both (b) and (c)

7. Which alga shows diplontic life cycle?
a) Chara
b) Fucus
c) Ectocarpus
d) Polysiphonia

Answer: b
Explanation: Fucus

8. How many organisms show haplodiplontic life cycle?
Sphagnum, Volvox, Ulothrix, Marchantia, Polytrichum, Selaginella, Pinus, Cedrus, Ectocarpus, Polysiphonia
a) 8
b) 6
c) 7
d) 9

Answer: b
Explanation: 6

9. How many organisms show diplontic life cycle?
Selaginella, Equisetum, Cycas, Cedrus, Ectocarpus, Fucus, Sequoia
a) 7
b) 5
c) 4
d) 6

Answer: c
Explanation: 4

10. Which of the organisms show haplontic life cycle?
a) Chlamydomonas, volvox
b) Ectocarpus, polysiphonia
c) Fucus
d) All of these

Answer: a
Explanation: Chlamydomonas, volvox