Question. The function of leaf in a plant is :
(A) Respiration
(B) Transpiration
(C) Photosynthesis
(D) All the above
Answer: D
Question. Leaves are destarched by keeping the plant in
(A) 10 – 12 hours in night
(B) 10 – 12 hours in day
(C) 2 hours in sun light
(D) Only 2 hours in night
Answer: A
Question. Covering with black paper strips should be tested for presence of :
(A) Water in leaf
(B) CO2 in leaf
(C) O2 in leaf
(D) Starch in leaf
Answer: D
Question. The type of starch produced during photosynthesis is :
(A) Polysaccharides
(B) Monosaccharides
(C) Oligosaccharides
(D) None of these
Answer: A
Question. If the intensity of light is increased, the rate of photosynthesis :
(A) Decreases upto certain limit
(B) Increases upto certain limit
(C) Remain the same
(D) Increases and decreases at regular interval
Answer: B
Question. The colour of light in which rate of photosynthesis is minimum :
(A) Red light
(B) Blue light
(C) Green light
(D) Yellow light
Answer: C
Question. Chlorophyll–a present in :
(A) Algae
(B) Bacteria
(C) Croton
(D) Both (A) and (C)
Answer: D
Question. A non-green cell will not have the following activity
(A) Required water
(B) Evolve carbon dioxide
(C) Requires carbohydrates
(D) Evolve O2
Answer: D
Question. The teacher instructed a student to place a healthy potted shoe flower plant in a dark room for 24 hour prior to an experiment on photosynthesis. The purpose of placing it in a dark room is :
(A) To increase the intake of CO2
(B) To activity the chloroplast in the leaves
(C) To destarch the leaves
(D) To denature the enzymes in the leaves
Answer: C
Question. During light reaction photosynthesis pigments chlorophyll–a absorbs visible light energy in the form of :
(A) Quanta or photons
(B) Electrons
(C) Protons
(D) Neutrons
Answer: A
Question. During chemical reaction between acid and base, Salt and water are formed. What is the process called ?
(A) Neutralization
(B) Corrosion
(C) Hydrolysis
(D) Ionization
Answer: A
Question. Which is the longest organ of the digestive system?
(A) Oesophagus
(B) Stomach
(C) Small INtestine
(D) Large Intestine
Answer: C
Question. The simplest amino acid is
(A) Lysine
(B) Leucine
(C) Glycine
(D) Methionine
Answer: C
Question. Gastric juice contains
(A) Pepsin and trypsin
(B) Pepsin and HCl
(C) Trypsin and HCl
(D) Amylase and Pepsin
Answer: B
Question. Decrease of vitamin C and Carotene contest in vegetables and fruits is due to____
(A) Excess Potassium content in soil
(B) Excess Phosphate content in soil
(C) Less Nitrogen content in soil
(D) Less Potassium content in soil
Answer: A
Question. Match the items in Column - I with Column-II
Column-I Column-II
(A) Riboflavin (i) Anemia
(B) Folic acid (ii) Scurvy
(C) Retinol (iii) Glossitis
(D) Ascorbic acid (iv) NIght blindness
Select the correct matching
(A) A-(iii), B-(i), C-(iv), D-(ii)
(B) A-(iv), B-(i), C-(ii), D-(iii)
(C) A-(iii), B-(iv), C-(i), D-(ii)
(D) A-(ii), B-(i), C-(iv), D-(iii)
Answer: A
Question. What is the common product of both photosynthsis and respiration ?
(A) Oxygen
(B) ADP
(C) CO2
(D) ATP
Answer: D
Question. One of the following juices secreted in the body of man does not contain any enzyme :
(A) Gastric Juice
(B) Saliva
(C) Bile Juice
(D) Pancreatic Juice
Answer: C
Question. Which part of the alimentary canal initiates digestion of protein :
(A) Mouth
(B) Oesophagus
(C) Stomach
(D) Small intestine
Answer: C
Question. If a photosynthsizing plant releases oxygen gas containing O15. It is concluded that the plant has been supplied with :
(A) C6H12O6 containing O18
(B) CO2 containing O18
(C) H2O containing O18
(D) Oxygen in the form of ozone
Answer: C
Question. The tusks of female elephant are :
(A) Molars
(B) Lower incisors
(C) Upper incisors
(D) Canines
Answer: C
Question. Which of the following is least effective for photosynthesis ?
(A) Red light
(B) Blue light
(C) Green light
(D) Violet light
Answer: C
