NEET Biology Previous Year Questions 2019 with Solutions

Question 71 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Microbes In Human Welfare

Select the correct group of biocontrol agents.

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Question 72 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Biotechnology Principles And Processes

Following statements describe the characteristics of the enzyme Restriction endonuclease. Identify the incorrect statement.

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Question 73 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Organisms And Populations

Pinus seed cannot germinate and establish without fungal association. This is because:

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Question 74 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Organisms And Populations

Match Column - I with Column - II.

Column-I	Column-II
(A)Saprophyte	(I)Symbiotic association of fungi with plant roots
(B)Parasite	(II)Decomposition of dead organic materials
(C)Lichens	(III)Living on living plants or animals
(D)Mycorrhiza	(IV)Symbiotic association of algae and fungi

Choose the correct answer from the options given below:

Explanation:

Correct match: A-Saprophyte ↔ II-Decomposition of dead organic materials; B-Parasite ↔ III-Living on living plants or animals; C-Lichens ↔ IV-Symbiotic association of algae and fungi; D-Mycorrhiza ↔ I-Symbiotic association of fungi with plant roots. So the pairings are (A)-(II), (B)-(III), (C)-(IV), (D)-(I), i.e., option 4. This follows NCERT definitions: saprophytes decompose dead matter; parasites live on hosts; lichens are a fungus-alga mutualism; mycorrhiza is a fungus-plant root symbiosis.

🧠 Did You Know?

Mycorrhiza improves water and nutrient uptake for plants, while lichens can survive in harsh environments due to their composite organism.

💡 NCERT Memory Line:

Saprophytes decompose dead organic materials; Mycorrhiza is a fungus–plant root symbiosis; Parasites live on living hosts; Lichens are a fungus–alga mutualism.

Question 75 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Ecosystem

Which of the following ecological pyramids is generally inverted?

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Question 76 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Biodiversity And Conservation

Which of the following is the most important causes for animals and plants being driven to extinction?

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Question 77 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Biodiversity And Conservation

Which one of the following is not a method of in situ conservation of biodiversity?

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Question 78 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Biodiversity And Conservation

The Earth Summit held in Rio de Janeiro in 1992 was called:

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Question 79 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Environmental Issues

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to:

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Question 80 of 90

🟢 NEET 2019 📘 CLASS XII 🌿 Environmental Issues

Which of the following protocols did aim for reducing emission of chloroflurocarbons into the atmosphere?

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NEET Biology 2019 PYQs