Which one of the following statements is not true?

A Pollen grains of many species cause severe allergies.
B Stored pollen in liquid nitrogen can be used in the crop breeding programmes.
C Tapetum helps in the dehiscence of anther.
D Exine of pollen grains is made up of sporopollenin.

Verified Solution

Answer & Solution

Correct Answer

(C) Tapetum helps in the dehiscence of anther.

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match the following group of organisms with their respective distinctive characteristics and select the correct option:

Organisms	Characteristics
(\(a\)) Platyhelminthes	(\(i\)) Cylindrical body with no segmentation
(\(b\)) Echinoderms	(\(ii\)) Warm blooded animals with direct development
(\(c\)) Hemichordates	(\(iii\)) Bilateral symmetry with incomplete digestive system
(\(d\)) Aves	(\(iv\)) Radial symmetry with indirect development

NEET 2020 Medium

Match List \(- I\) with List \(- II.\)

List \(- I\)	List \(- II\)
\((a)\) Filariasis	\((i)\) Haemophilus influenzae
\((b)\) Amoebiasis	\((ii)\) Trichophyton
\((c)\) Pneumonia	\((iii)\) Wuchereria bancrofti
\((d)\) Ringworm	\((iv)\) Entamoeba histolytica

Choose the correct answer from the options given below. \((a)- (b)- (c) -(d)\)

NEET 2021 Medium

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List \(- I\)	List \(-II\)
(a) Physalia	(i) Pearl oyster
(b) Limulus	(ii) Portuguese Man of War
(c) Ancylostoma	(iii) Living fossil
(d) Pinctada	(iv) Hookworm

List I (Growth Regulator)	List II (Function/Effect)
A. 2,4-D	I. Brewing industry
B. \(GA _3\)	II. Stimulation of stomatal closure
C. Kinetin	III. Herbicide
D. ABA	IV. Nutrient mobilisation