Tamil Nadu (English Medium) Plus 1 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
A cell swells up when kept in

(A) Hypotonic solution	(B) Hypertonic solution
(C) Isotonic solution	(D) All of these

Question-2
Stomata which can open at night,are present in

(A) Xerophytes	(B) Gametophytes
(C) Hydrophytes	(D) None of these

Question-3
A plant which lives on another plant but do not take food or anything from plant is called

(A) Endophyte	(B) Epiphyte
(C) Parasite	(D) Host

Question-4
The number of essential nutrients needed in plant is

(A) 16	(B) 5
(C) 4	(D) 8

Question-5
Hydathodes are also called

(A) Water stomata	(B) Sunken stomata
(C) Guard cells	(D) Subsidiary cells

Question-6
For nitrogen fixation, useful pigment is :

(A) Nitrogenase	(B) Haemoglobin
(C) Myoglobin	(D) Leghaemoglobin

Question-7
Which one of the following is not a micronutrient ?

(A) Molybenum	(B) Magnesium
(C) Zinc	(D) Born

Question-8
The deficiency of this micronutrient results in little leaf disease

(A) Copper	(B) Zinc
(C) Boron	(D) Iron

Question-9
Zn, Mo, Fe, Cu are

(A) Trace elements	(B) Non-essentials
(C) Macronutrients	(D) None of these

Question-10
Stroma in the chloroplasts of higher plants contains

(A) Light-independent reaction enzymes	(B) Light-dependent reaction enzymes
(C) Ribosome	(D) Chlorophyll

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Plus 1 Biology Science

Tamil Nadu (English Medium)

Practice in Related Chapters
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