91.

Select the wrongly matched pair

• Fibre - Sunhemp

• Spice - Belladonna

• Edible oil - Groundnut

• Fodder - Trifolium

• Fodder - Trifolium

The residual persistent nucellus in the seed of black pepper and beet is called

• Perisperm

• Endosperm

• Pericarp

• Scutellum

• Scutellum

Consider the following statements with respect to flowering plants

(A) The pollen grains represent the male gametes

(B) The functional megaspore developing into the embryo sac represent the female gamete

(C) Transfer of pollen grains from anther to the stigma of different plant is known as xenogamy

(D) Transfer of pollen grains from anther to the stigma of another flower of the same plant is known as geitonogamy

Of the above statements

• (A) and (B) alone are correct

• (A) and (C) alone are correct

• (A) and (D) alone are correct

• (B) and (C) alone are correct

• (B) and (C) alone are correct

Each secondary spermatocyte after second meiotic division produces

• four haploid spermatids

• only one haploid spermatid

• two haploid spermatids

• two diploid spermatids

• two diploid spermatids

The hormone releasing IUD is

• LNG 20

• Lippes loop

• CuT

• Multiload 375

• Multiload 375

Read the statements regarding a stable community and choose the correct option
(1) must be resistant to occasional disturbances

(2) should show much variation in productivity from year to year

(3) must be resistant to invasions by alien species

• (1) and (2) are correct

• (1), (2) and (3) are correct

• (1) only is correct

• (2) and (3) are correct

• (2) and (3) are correct

Find the wrongly matched pair

• Endemism - species confined to a region and not found anywhere else

• Hot spots - Western ghats

• Sacred groves - Jaintia hills of Rajasthan

• ex situ conservation - Zoological parks

• ex situ conservation - Zoological parks

The cytokine barrier among these is

• Polymorphonuclear neutrophil

• Monocyte

• NK cell

• Interferon

• Interferon

Ringworms are caused by

I. Wuchereria

II. Microsporum

III. Haemophilus

IV. Epidermophyton

• I and II

• II and III

• II and IV

• I and IV

• I and IV

Read the statements

(1) IgE antibodies are produced in an allergic reaction

(2) B-lymphocytes mediate cell mediated immunity

(3) The yellowish fluid colostrum has abundant IgE antibodies

(4) Spleen is a secondary lymphoid organ

Of the above statements

• (1) only is correct

• (1) and (2) are correct

• (2) and (3) are correct

• (3) and (4) are correct

• (3) and (4) are correct