Arrange the following cell layers/structures around the female gamete, from outer to inner side :
A. Zona pellucida
B. Perivitelline space
C. Corona radiata
D. Plasma membrane of ovum
Choose the correct answer from the options given below :
$D, B, A, C$
$\mathrm{C}, \mathrm{A}, \mathrm{D}, \mathrm{B}$
$\mathrm{C}, \mathrm{A}, \mathrm{B}, \mathrm{D}$
$\mathrm{A}, \mathrm{C}, \mathrm{B}, \mathrm{D}$
What is the reason behind production of large holes in 'Swiss Cheese'?
The production of large amount of $\mathrm{CO}_2$ by Propionibacterium sharmanii
The production of large amount of $\mathrm{CO}_2$ by Clostridium butylicum
The production of large amount of $\mathrm{CO}_2$ and $\mathrm{H}_2$ by lactic acid bacteria called Lactobacillus
The production of large amount of $\mathrm{CO}_2$ and $\mathrm{H}_2$ by Trichoderma polysporum
The toxin proteins isolated from Bacillus thuringiensis, coded by which of the following genes would contrl cotton bollworms and corn borer, respectively?
cryIAc and cryIAb
crylAc and cryllAb
cryllAb and crylAc
cryIAc and cryIIIAb
Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for:
Pyramid of number in grassland
Pyramid of energy in pond ecosystem
Pyramid of biomass in grassland
Pyramid of biomass in sea
NEET Papers
All year-wise previous year question papers