Conjugation is seen in _____

(a)

Vorticella

(b)

Amoeba

(c)

Reptiles

(d)

Actinosphaerium

A few statements with regard to sexual reproduction are given below:
i. Sexual reproduction does not always require two individuals
ii. Sexual reproduction generally involves gametic fusion
iii. Meiosis never occurs during sexual reproduction
iv. External fertilization is a rule during sexual reproduction
Choose the correct statements from the options below:

(a)

i and iv

(b)

i and ii

(c)

ii and iii

(d)

i and iv

Each testis is covered by a fibrous layer _____

(a)

tubulus rectus

(b)

corona radiata

(c)

vitelline membrane

(d)

tunica albuginea

Which one of the following is not the function of placenta?

(a)

To facilitate supply of oxygen and nutrients to embryo

(b)

To secrete oestrogen

(c)

To facilitate the removal of carbondi oxide and material from embryo

(d)

To secrete oxytocin during parturition

The incubation period for _____ varies between 1-8 months.

(a)

HPV

(b)

HIV

(c)

HBV

(d)

candida

Which of the following is a hormone releasing Intrauterine Device (IUD)?

(a)

Multi load 375

(b)

LNG - 20

(c)

Cervical cap

(d)

Vault

The allele I^o is called _______

(a)

Dominant allele

(b)

multiple allele

(c)

null allele

(d)

epistatic allele

The enzyme polynucleotide phosphorylase is named after ___________.

(a)

Francis crick

(b)

Severo Ochoa

(c)

Marshall Nirenby

(d)

Kornby

The RNA polymerase of prokaryotes binds with ____________ factor to initiate polymerization.

(a)

rho

(b)

theta

(c)

sigma

(d)

psi

Species introduced deliberately in an area are referred as_______

(a)

Endemic species

(b)

Vulnerable species

(c)

Exotic species

(d)

Extinct species