Discussion
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- Question
Plants are killed in winter by frost
Options- A. because of desiccation and mechanical damage to the tissues
- B. because no photosynthesis takes place at such low temperature
- C. because respiration ceases at such low temperature
- D. because there is no transpiration
- Correct Answer
- because of desiccation and mechanical damage to the tissues
- 1. Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with
Options- A. all gymnosperms, except conifers
- B. only angiosperms
- C. only conifers
- D. angiosperms and all gymnosperms except conifers Discuss
- 2. Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?
Options- A. Order
- B. Subspecies
- C. Class
- D. Genus Discuss
- 3. Plants receive their nutrients mainly from
Options- A. chlorophyll
- B. atmosphere
- C. light
- D. soil Discuss
- 4. Nymph is the name of young one of
Options- A. butterfly
- B. beetle
- C. housefly
- D. cockroach Discuss
- 5. Primary phloem develops from
Options- A. lateral meristem
- B. protoderm
- C. extrastelar cambium
- D. provascular tissue Discuss
- 6. Myopia is connected with
Options- A. ears
- B. eyes
- C. lungs
- D. None of these Discuss
- 7. Movements due to light are shown by
Options- A. flowering plants
- B. lower plants
- C. all land plants
- D. all the plants Discuss
- 8. Mutation is
Options- A. a factor responsible for plant growth
- B. a change which affects the offspring of F2 generation only
- C. a change that is inherited
- D. a change which affects the parents Discuss
- 9. Ptyalin is an enzyme produced in the
Options- A. salivary glands
- B. pituitary glands
- C. thyroid glands
- D. pancreas Discuss
- 10. One of the following is most suitable for study of mutations
Options- A. Haploids
- B. Diploids
- C. Tetraploids
- D. Polyploid Discuss
Biology problems
Search Results
Correct Answer: only conifers
Correct Answer: Class
Correct Answer: soil
Correct Answer: cockroach
Correct Answer: provascular tissue
Correct Answer: eyes
Correct Answer: flowering plants
Correct Answer: a change that is inherited
Correct Answer: salivary glands
Correct Answer: Haploids
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