Assertion: No secondary growth takes place in monocots.

Reason: Secondary growth is not related with cambium.

• If both assertion and reason are true and reason is the correct explanation of assertion. 

• If both assertion and reason are true but reason is not the correct explanation of assertion. 

• If assertion is true but reason is false. 

• If both assertion and reason are false.

Assertion: Soil particles, particularly clay and organic matter in soil, contain negative charges that attract positively-charged ions such as Ca²⁺, K⁺ and Mg²⁺.

Reason: Essential elements derived from soil are termed as mineral elements while those derived from air or water are known as nonmineral elements.

• If both assertion and reason are true and reason is the correct explanation of assertion. 

• If both assertion and reason are true but reason is not the correct explanation of assertion. 

• If assertion is true but reason is false. 

• If both assertion and reason are false.

Assertion: Presence of large amounts of nutrients in water body causes excessive growth of planktonic algae.

Reason: It is due to biomagnification.

• If both assertion and reason are true and reason is the correct explanation of assertion. 

• If both assertion and reason are true but reason is not the correct explanation of assertion. 

• If assertion is true but reason is false. 

• If both assertion and reason are false.

34.

Match column1 and column2 and select the correct options from codes given below.

      Column1        Column2

A. Pigments          1) Abrin, ricin

B. Toxin                2) Concanavalin A

C. Alkaloid            3) Carotenoids A

D. Lectins             4) Morphine, codeine

• A-(4), B-(3), c-(1), D-(2)

• A-(2), B-(4), c-(1), D-(3)

• A-(3), B-(1), c-(4), D-(2)

• A-(1), B-(2), c-(3), D-(4)

Hormones for the menstrual cycle are produced by

• ovaries only

• uterus only

• ovaries and uterus

• ovaries and anterior pituitary

Match Column - I with Column -II and select the correct option from given codes.

   Column-I                 Column- II

A. Brassica                (i) Himgiri

B. Okra                     (ii) Pusa Komal

C. Wheat                  (iii) Pusa Gaurav

D. Cowpea                (iv) Pusa Sawani

• A- (iii), B- (iv), C-(1), D- (ii)

• A-(i), B- (iii), C - (ii), D- (iv)

• A- (iv), B- (iii), C- (i), D- (ii)

• A- (ii), B - (iv), C- (i), D - (iii)

What is the correct sequence of the formation of female gametophyte in angiosperms

• Nucellus, megapore tetrad, megaspore mother cell, megaspore, female gametophyte

• Megaspore tetrad, nucellus, megaspore mother cell, megaspore, female gametophyte

• Nucellus, megaspore mother cell, megaspore tetrad, megaspore, female gametophyte

• Megaspore mother cell, megaspore tetrad, megaspore, nucellus, female gametophyte

Match the following and select the correct option.

        Column-I          Column- II
A. Emphysema        (i) Increase in the concentration of non-biodegradable                                                                    substances in food chains

B. ADA deficiency    (ii) $\alpha$-1 antitrypsin

C. Eutrophication    (iii) Bone marrow transplantation

D. Biomagnification (iv) Nutrient enrichment of a water body

• A- (iii), B - (ii), C- (iv), D - (i)

• A-(ii), B- (iii),C- (iv), D-(i)

• A-(ii), B - (iv),C - (i), D - (iii)

• A- (iv), B- (ii), C- (iii), D-(i)

Select the correct order of processing of PCR.

• Extension, primer annealing, denaturation

• Denaturation, primer annealing, extension

• Denaturation, extension, primer annealing

• Primer annealing, denaturation, extension

Plasmid vector in DNA recombinant technology means

• a virus that transfers gene to bacteria

• extra-chromosomal autonomously replicating circular DNA

• sticky end of DNA

• any fragment of DNA carrying desirable gene.