Plant ecology is a branch of ecology that focuses on the study of plants and their interactions with the environment. It explores plant distribution patterns, adaptations, community dynamics, and the roles of plants in ecosystem processes such as nutrient cycling and energy flow. The following Plant Ecology MCQ explore the importance of plants in ecosystem.
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1. Which of the following statement best describe a seral community in an ecological succession?
a. Less stable
b. More aggressive
c. More diversity but less stability
d. More adaptability but less stability
2. Which of the following is NOT an adaptation of a hydrophyte?
a. Less parenchyma in the stem
b. Less cuticle over the epidermis
c. Stomata on the upper side of the leaf
d. Poorly developed root system
3. The leaf like structure seen in the Acacia plant is:
a. Phyllode
b. Cladode
c. Phylloclade
d. Cladophyll
4. Mycorrhizal symbiotic association in plants with fungi helps in the absorption of which component from the soil?
a. Nitrates
b. Nitrites
c. Ammonia
d. Phosphates
5. The process of dendrochronology cannot be applied to plants living in___
a. Trees in the tropical areas
b. Trees in the temperate areas
c. Trees growing in the region of equators
d. Trees growing in the alpine regions
6. Which of the following is NOT an adaptation of xerophytic plants?
a. The presence of palisade like tissue in stem
b. The presence of thick cuticle
c. CAM cycle for photosynthesis
d. Large leaves if present
7. Pneumatophores are characteristic of:
a. Alpine plants
b. Mangrove plants
c. Desert plants
d. Aquatic plants
8. Methemoglobinemia is caused by the drinking of water contaminated with:
a. Phosphate
b. Mercury
c. Cadmium
d. Nitrate
9. The ratio between regional and local species diversity is measured as:
a. Alpha diversity
b. Beta diversity
c. Gamma diversity
d. Delta diversity
10. Two biodiversity hot-spots in India are
a. Eastern Himalayas and Western Ghats
b. Western Himalayas and Western Ghats
c. Eastern Himalayas and Eastern Ghats
d. Western Himalayas and Eastern Ghats
11. A species in Tropical Rainforest which acts as a Key-stone species:
a. Dalbergia
b. Ficus
c. Santalum
d. Nepenthes
12. Which of the following is an example for link species?
a. Clownfish
b. Cuscuta
c. Mycorrhiza
d. Lichen
13. In an ecological interaction, the commensalism can be represented as:
a. + –
b. – +
c. + 0
d. – 0
14. Which of the following is a micronutrient in plants?
a. Ca
b. Mg
c. Mn
d. S
15. Brassica juncea can be used as the phytoremediation agent for the removal of ___________ from the soil.
a. Nickel
b. Cadmium
c. Lead
d. Arsenic
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Answer Key
1. Ans. (d). More adaptability but less stability
2. Ans. (a). Less parenchyma in the stem
3. Ans. (a). Phyllode
4. Ans. (d). Phosphates
5. Ans. (c). Trees growing in the region of equators
6. Ans. (d). Large leaves if present
7. Ans. (b). Mangrove plants
8. Ans. (d). Nitrate
9. Ans. (b). Beta diversity
10. Ans. (a). Eastern Himalayas and Western Ghats
11. Ans. (b). Ficus
12. Ans. (c). Mycorrhiza
13. Ans. (c). + 0
14. Ans. (c). Mn
15. Ans. (c). Lea