The process during double fertilization in which non motile male gametes are carried through hollow pollen tube is called

• (A) chalazogamy
• (B) porogamy
• (C) mesogamy
• (D) siphonogamy

In Citrus, embryos develop from diploid cells of nucellus along with the zygotic embryo, resulting in polyembryony. This type of polyembryony is called:

• (A) adventive
• (B) cleavage
• (C) true
• (D) defective

During asexual reproduction, gemmule formation occurs in:

• (A) Yeast
• (B) Spirogyra
• (C) Sponges
• (D) Amoeba

Median vertical depression of external genitalia in females, enclosing the urethral and vaginal opening is called:

• (A) Mons pubis
• (B) Vestibule
• (C) Clitoris
• (D) Hymen

Failure of testis to descend into the scrotum is called:

• (A) Atresia
• (B) Cretinism
• (C) Amenorrhea
• (D) Cryptorchidism

During menstrual phase, the blood released from uterus does not clot due to the presence of:

• (A) Fibrinogen
• (B) Fibrinolysin
• (C) Prostaglandin
• (D) Inhibin

Given below are the two statements:

Statement I: Only one strand in the transcription unit functions as template and is called antisense strand.

Statement II: The coding strand of transcription unit is called sense strand.

In light of the above statements, choose the correct answer from the options given below.

• (A) Both statement I and statement II are correct.
• (B) Both statement I and statement II are incorrect.
• (C) Statement I is correct and statement II is incorrect.
• (D) Statement I is incorrect and statement II is correct.

First evidence for triplet genetic code was given by

• (A) Crick
• (B) Nirenberg and Matthaei
• (C) Dr. H. G. Khorana
• (D) Severo Ochoa

Chromosomal aberration in which there is no loss or gain of gene complement is

• (A) deletion
• (B) duplication
• (C) inversion
• (D) translocation

In plants, active absorption usually does NOT occur when ____.

• (A) stomata are open
• (B) stomata are closed
• (C) transpiration stops
• (D) it is night time

Which one of the following belongs to New World monkey?

• (A) Baboons
• (B) Macaques
• (C) Spider monkeys
• (D) Langurs

The length of root hair is

• (A) 1-10 mm
• (B) 11-20 mm
• (C) 21-30 mm
• (D) 31-40 mm

Which among the following represents the process of reductive deamination?

• (A) ketoglutaric acid + \(NH_4^+\) + \(NADPH\) \(\to\) Glutamic acid + \(H_2O\) + \(NADP^+\)
• (B) Glutamic acid + Oxaloacetic acid \(\to\) \(\alpha\)-ketoglutaric acid + Aspartic acid
• (C) Glutamic acid + \(NH_4^+\) + \(ATP\) \(\to\) Glutamine + \(ADP\) + \(Pi\)
• (D) Aspartic acid + \(NH_4^+\) \(\to\) Asparagine + \(ADP\)

Which of the following microbial sources is used for the production of antibiotic terramycin?

• (A) Streptomyces erythreus
• (B) Streptomyces venezuelae
• (C) Streptomyces griseus
• (D) Streptomyces aurifaciens

The term used for species in which the last individual has died or is not recorded is

• (A) Extinct
• (B) Near threatened
• (C) Endangered
• (D) Vulnerable