MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Study the following statements
1. In gymnosperms, seeds not enclosed in fruits.
2. Common name of Ginkgo is maiden hair tree.
3. Drug ephedrine obtained from stem of Ephedra.
Which of the statements given above are correct about gymnosperms?

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Important Questions on Biology

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 132
Assertion (A) A chlorophylous multicellular or eukaryotic decomposers are fungi.
Reason (R) Fungi have cell wall rich in cellulose and specialised chitin.
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 133
Consider the following statements
1.Cyanobacteria have chlorophyll-a similar to green plants.
2. Cyanobacteria often form blooms in polluted water bodies.
3. Chemosynthetic autotrophic bacteria oxidise various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production.
Which of the above are true correct?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 134
Consider the following statements
1. The most unique mammalian characteristic is the presence of milk producing glands (mammary glands) by which the young ones are nourished.
2. The endoskeleton of birds is fully ossified (bony) and the long bones are hollow with air cavities.
Which of the above is/are correct?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 135
Consider the following statements
1. Mollusca is the second largest phylum of animals after Arthropoda.
2. Mollusc body is covered by calcareous shell.
3. The body of a typical mollusc is distinguished into head visceral mass and foot.
4. The excretory matter is ammonia or uric acid.
Which of the statement given above are correct?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 136
Consider the following statements
1.Pteridophytes are used for medicinal purposes and as soil-binders.
2. Pteridophytes are first terrestrial plants possess vascular tissuesxylem and phloem.
3. The gymnosperms are plants in which the ovules are not enclosed by any ovary wall.
Which of the statements given above are correct?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 137
Sphagnum is used as a packing material for transporting living plants because of its
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 138

Assertion (A): Bryophytes are the amphibians of the plant kingdom.

Reason (R): They are found in swamps and areas, where water and land meet.

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 4>Q 139
Consider the following statements AIDS is transmitted
1. by sexual intercourse.
2. by blood transfusion.
3. by mosquitoes and other blood sucking insects.
4. across the placenta.
Which of the statements given above are correct?