Life Sciences
2020 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 61–63 of 125. Imported answers require review unless explicitly marked reviewed.
Question 16
Open questionXL-RMCQ2 marksNeeds review
Match the following alkaloids with their uses and source plants in CORRECT combination
Alkaloid | Use | Source plant
P. Morphine | i. Anti-cancer | 1. Cinchona officinalis
Q. Quinine | ii. Analgesic | 2. Catharanthus roseus
R. Atropine | iii. Anti-cholinergic | 3. Papaver somniferum
S. Vinblastine | iv. Anti-malarial | 4. Hyoscyamus niger
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Open questionXL-RMCQ2 marksNeeds review
Match the following ecological terms with their appropriate definitions
Term | Definition
P. Niche | i. Position of a species in food chain
Q. Biota | ii. Place of a living organism in the biotic environment and its relates to food and enemies
R. Trophic level | iii. Physical environment of an organism
S. Habitat | iv. Totality of organisms (flora and fauna) in a given place or region
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 18
Open questionXL-RMCQ2 marksNeeds review
Arrange the following ‘water reservoirs of earth’ in decreasing order of water volume
P- Streams
Q- Groundwater
R- Glaciers
S- Lakes and inland seas
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