Q4. Match the following diseases with the causative organism and select the correct option.
Column-I
a. Typhoid
b. Pneumonia
c. Filariasis
d. Malaria
Column-II
i. Wuchereria
ii. Plasmodium
iii. Salmonella
iv. Haemophila
1. a (i) b (iii) c (ii) d (iv)
2. a (iii) b (iv) c (i) d (ii)
3. a (ii) b (i) c (iii) d (iv)
4. a (iv) b (i) c (ii) d (iii)
2. a (iii) b (iv) c (i) d (ii)
Q6. Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.
1. The gene (I) has three alleles
2. A person will have only two of the three alleles
3. When IA and IB are present together, they express same type of sugar.
4. Allele ‘i’ does not produce any sugar.
3. When IA and IB are present together, they express same type of sugar.
Q9. Match the following columns and select the correct option.
Column-I
a. Gregarious, polyphagous pest
b. Adult with radial symmetry and larva with bilateral symmetry
c. Book lungs
d. Bioluminescence
Column-II
i. Asterias
ii. Scorpion
iii. Ctenoplana
iv. Locusta
1. a (i) b (iii) c (ii) d (iv)
2. a (iv) b (i) c (ii) d (iii)
3. a (iii) b (ii) c (i) d (iv)
4. a (ii) b (i) c (iii) d (iv)
2. a (iv) b (i) c (ii) d (iii)
Q14. Identify the correct statement with regard to G1 phase (Gap 1) of interphase.
1. DNA synthesis or replication takes place.
2. Reorganization of all cell components takes place.
3. Cell is metabolically active, grows but does not replicate its DNA.
4. Nuclear Division takes place.
3. Cell is metabolically active, grows but does not replicate its DNA.
Q19. Identify the wrong statement with reference to transport of oxygen
1. Binding of oxygen with haemoglobin is mainly related to partial pressure of O2
2. Partial pressure of CO2 can interfere with O2 binding with haemoglobin
3. Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin
4. Low pCO2 in alveoli favours the formation of oxyhaemoglobin
3. Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin
Q22. Identify the wrong statement with regard to Restriction Enzymes.
1. Each restriction enzyme functions by inspecting the length of a DNA sequence.
2. They cut the strand of DNA at palindromic sites.
3. They are useful in genetic engineering.
4. Sticky ends can be joined by using DNA ligases.
4. Sticky ends can be joined by using DNA ligases.
Q25. If the head of cockroach is removed, it may live for few days because
1. The supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen
2. The cockroach does not have nervous system.
3. The head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body
4. The head holds a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body.
3. The head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body
Q26. Which of the following statements are true for the phylum-Chordata?
a. In Urochordata notochord extends from head to tail and it is present throughout their life.
b. In Vertebrata notochord is present during the embryonic period only.
c. Central nervous system is dorsal and hollow.
d. Chordata is divided into 3 subphyla : Hemichordata, Tunicata and Cephalochordata.
1. (d) and (c)
2. (c) and (a)
3. (a) and (b)
4. (b) and (c)
4. (b) and (c)
Q27. Match the organism with its use in biotechnology.
Coluumn-I
a. Bacillus thuringiensis
b. Thermus aquatics
c. Aquabacterium tumefaciens
d. Salmonella typhimurium
Column-II
i. Cloning vector
ii. Construction of first rDNA
iii. DNA polymerase
iv. Cry proteins
1. a(ii) b(iv) c(iii) d(i)
2. a(iv) b(iii) c(i) d(ii)
3. a(iii) b(ii) c(iv) d(i)
4. a(iii) b(iv) c(i) d(ii)
2. a(iv) b(iii) c(i) d(ii)
Q28. Match the following concerning essential elements and their functions in plants
Column-I
a. Iron
b. Zinc
c. Boron
d. Manganese
Column-II
(i) Photolysis of water
(ii) Pollen germination
(iii) Required for chlorophyll biosynthesis
(iv) IAA biosynthesis
1. a(ii) b(i) c(iv) d(iii)
2. a(iv) b(iii) c(ii) d(i)
3. a(iii) b(iv) c(ii) d(i)
4. a(iv) b(i) c(ii) d(iii)
3. a(iii) b(iv) c(ii) d(i)
Q29. Identify the incorrect statement.
1. Heartwood does not conduct water but gives mechanical support
2. Sapwood is involved in the conduction of water and minerals from the root to the leaf
3. Sapwood is the innermost secondary xylem and is lighter in colour
4. Due to deposition of tannins, resins, oils etc., the heartwood is dark in colour
3. Sapwood is the innermost secondary xylem and is lighter in colour
Q30. Match the following: Choose the correct option
Column-I
a. Inhibitor of catalytic activity
b. Possess peptide bonds
c. Cell wall material in fungi
d. Secondary metabolite
Column-II
(i) Ricin
(ii) Malonate
(iii) Chitin
(iv) Collagen
1. a(ii) b(iv) c(iii) d(i)
2. a(iii) b(i) c(iv) d(i)
3. a(iii) b(iv) c(i) d(ii)
4. a(ii) b(iii) c(i) d(iv)
1. a(ii) b(iv) c(iii) d(i)
Q35. Which of the following statements is not correct?
1. In man insulin is synthesized as a proinsulin
2. The proinsulin has an extra peptide called C-peptide.
3. The functional insulin has A and B chains linked together by hydrogen bonds.
4. Genetically engineered insulin is produced in E.Coli.
3. The functional insulin has A and B chains linked together by hydrogen bonds.
Q36. The transverse section of a plant shows the following anatomical features:
(a) Large number of scattered vascular bundles surrounded by bundle sheath
(b) Large conspicuous parenchymatous ground tissue
(c) Vascular bundles conjoint and closed
(d) Phloem parenchyma absent
Identify the category of plant and its part :
1. Monocotyledonous stem
2. Monocotyledonous root
3. Dicotyledonous stem
4. Dicotyledonous root
1. Monocotyledonous stem
Q37. Match the following columns and select the correct option.
Column-I
(a) 6-15 pairs of gill slits
(b) Heterocercal caudal fin
(c) Air bladder
(d) Poison sting
Column-II
i. Trygon
ii. Cyclostomes
iii. Chondrichthyes
iv. Osteichthyes
1. a(ii) b(iii) c(iv) d(i)
2. a(iii) b(iv) c(i) d(ii)
3. a(iv) b(ii) c(iii) d(i)
4. a(i) b(iv) c(iii) d(ii)
1. a(ii) b(iii) c(iv) d(i)
Q38. From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask
1. CH4, H2, NH3 and water vapor at 800°C
2. CH3, H2, NH4 and water vapor at 800°C
3. CH4, H2, NH3 and water vapor at 600°C
4. CH3, H2, NH3 and water vapor at 600°C
1. CH4, H2, NH3 and water vapor at 800°C
Q44. Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?
(a) Darwin’s Finches of Galapagos islands.
(b) Herbicide resistant weeds.
(c) Drug resistant eukaryotes.
(d) Man-created breeds of domesticated animals like dogs.
1. only (a)
2. (a) and (c)
3. (b), (c) and (d)
4. (4) only (d)
3. (b), (c) and (d)
Q45. Identify the wrong statement with reference to immunity.
1. When exposed to antigen (living or dead) antibodies are produced in the host’s body. It is called “Active immunity”.
2. When ready-made antibodies are directly given, it is called “Passive immunity”.
3. Active immunity is quick and gives full response.
4. Foetus receives some antibodies from mother, it is an example for passive immunity.
3. Active immunity is quick and gives full response.