Plant Anatomy And Physiology - Study Mode

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[#251] Which of the following is a secondary treatment for the prevention of water pollution which involves allowing of water through a thick layer of stones or grave?

(A) Sedimentation method

(B) Trickling filter method

(C) Floatation method

(D) Screening method

Correct Answer

(B) Trickling filter method

[#252] The radicle of the developing embryo is enveloped by a sheath called

(A) Coleoptile

(B) Scutellum

(C) Coleorhiza

(D) Mycorrhiza

Correct Answer

(C) Coleorhiza

[#253] Which of the following substances are never found inside living cells, yet they are a major and characteristic component of all ecosystems?

(A) Adenosine triphosphates

(B) Deoxyribonucleic acids

(C) Humic substances

(D) Organic compounds

Correct Answer

(C) Humic substances

[#254] Match List-I with List-II and select the correct answer: List-I List-II a. Phytoedaphon 1. Plants growing on other plants b. Endophytes 2. Annuals, including algae, fungi, liverworts, mosses, many ferns and seed plants c. Epiphytes 3. Microscopic soil flora d. Therophytes 4. Plants living wholly or partly within other plants, as algae in lichens, or parasites

(A) a-2, b-3, c-1, d-4

(B) a-3, b-4, c-1, d-2

(C) a-3, b-2, c-4, d-1

(D) a-2, b-1, c-4, d-3

Correct Answer

(B) a-3, b-4, c-1, d-2

[#255] Coral reefs normally exist in water with mean temperature

(A) 20.5° C

(B) 10° C

(C) 30.7° C

(D) 0.4° C

Correct Answer

(A) 20.5° C