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
Which of the following is/are not an essential micro nutrient ?

(A) Boron	(B) Nickel and cadmium
(C) Molybdenum	(D) Zinc

Question-2
The process of decay of dead organic matter is known as

(A) Denitrifction	(B) Nitrification
(C) Nitrogen fixation	(D) Ammonification

Question-3
Zn, Mo, Fe, Cu are

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

Question-4
Which of the following gene is responsible for biological nitrogen fixation ?

(A) Nitrogenase	(B) Nif gene
(C) Yeast alanine tRNA synthetase	(D) RNA synthetase

Question-5
Munch hypothesis is based on

(A) Translocation of food due to TP gradient and imbibitions force	(B) Translocation of food due to turgor pressure (TP) gradient
(C) Translocation of food due to imbibitions force	(D) None of the above

Question-6
In higher plants, the shape of the chloroplast is

(A) Discoid	(B) Cup-shaped
(C) Girdle-shaped	(D) Reticulate

Question-7
A metal ion involved in stomatal regulation is

(A) Iron	(B) Potassium
(C) Zinc	(D) Magnesium

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

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

Question-9
Sunken stomata is found in the leaves of

(A) Trifolium	(B) Lemna
(C) Nerium	(D) Lilium

Question-10
Plant deficient of element zinc, shows its effect on the biosynthesis of plant growth hormone

(A) Ethylene	(B) Abscisic acid
(C) Auxin	(D) Cytokinin

Click here to see your answersheet and detailed track records.

Plus 1 Biology Science

Tamil Nadu (English Medium)

Practice in Related Chapters
Cell Biology
Biodiversity
Genetics
Plant Morphology
Plant Physiology
Reproductive Biology
Environmental Biology