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Homeothermy is exhibited by:
1. All amniotes
2. Birds and Mammals
3. All deuterostomes
4. Reptiles and Mammals

The most important function of the trichomes is:

Identify the incorrect statement:-
1. cork cambium is a periderm
2. ground meristem is a cortex and pith of a dicot stem
3. procambium is a primary vascular tissue
4. protoderm is a vascular tissue of a monocot stem
 

Which of the following has unevenly thick cell wall, has a primary wall (cellulose) and a secondary wall (hemicellulose or pectin), and is a  simple, living, primarily mechanical tissue of the plant body?
1. Parenchyma
2. Collenchyma
3. Sclerenchyma
4. Aerenchyma

Which of the following is the largest constituent of the membrane of the erythrocyte in human beings and is also responsible for performing most of the functions of the membrane?
1. Protein
2. Lipid
3. Glycolipid
4. Glycoprotein

Consider the following sets of some animals. The set that consists of all animals belonging to the same phylum is
1. Pinctada,Aplysia, Chaetopleura
2. Dentallium, Pila, Echinus
3. Asterias, Antedon, Ascidia
4. Adamsia, Gorgonia, Pleurobrachia
 

In non-competitive inhibition:
1. the substrate and inhibitor cannot bind to the enzyme at the same time
2. the inhibitor binds only to the substrate-enzyme complex
3. the inhibitor can bind to the enzyme at the same time as the enzyme's substrate
4. the binding of the inhibitor to the enzyme reduces its activity but does not affect the binding of substrate

Which of the following compounds is the weakest Lewis acid?
1. BF₃
2.  BCl₃
3. BBr₃
4.  BI₃

The conjugate acid of azide ion is:
1. NH₃                 2. N₃H
3. N₂H₄                4. ${\mathrm{N}}_2^{-}$

For the reaction:

 
Which reagent will be appropriate for the above conversion?
1. Zn-Hg/HCl
2. NH₂-NH₂/OH^-
3. LiAlH₄/H^$\oplus$
4. HI/P

3A $\to$ C + D, For this reaction it is observed that when initial concentration of A is 10 mole/lit then t_1/2 value of this reaction is 40 min and when initial concentration of A is 20 mole / lit, t_1/2 value has been changed into 20 min. Which of the following is true?
(1) The reaction is bimolecular reaction
(2) This reaction is an example of radioactive disintegration
(3) The reaction is of 1st order
(4) The order of the reaction is two

Assume that light of wavelength 7000 Angstrom is coming from a star. The limit of resolution (in radian) of a telescope whose objective has a diameter of 244 cm, will be
1.  $2.5 x {10}^{-7}$
2.  $5.0 x {10}^{-7}$
3.  $3.5 x {10}^{-7}$
4.  $4.5 x {10}^{-7}$

The longest and shortest wavelength of the Lyman series are (respectively)
1.  $1215 \stackrel{0}{\mathrm{A}}, 500 \stackrel{0}{\mathrm{A}}$
2.  $1215 \stackrel{0}{\mathrm{A}}, 912 \stackrel{0}{\mathrm{A}}$
3.  $912 \stackrel{0}{\mathrm{A}}, 500 \stackrel{0}{\mathrm{A}}$
4. $912 \stackrel{0}{\mathrm{A}}, 700 \stackrel{0}{\mathrm{A}}$

$\mathrm{Two} \mathrm{nucleons} \mathrm{are} \mathrm{at} \mathrm{a} \mathrm{separation} \mathrm{of} 1 \mathrm{fm}. \mathrm{The} \mathrm{net} \mathrm{force} \mathrm{between} \mathrm{them} \mathrm{is} {\mathrm{F}}_1 \mathrm{if} \mathrm{both} \mathrm{are} \mathrm{neutrons}, {\mathrm{F}}_2 \mathrm{if} \mathrm{both} \mathrm{are} \mathrm{protons} \mathrm{and} {\mathrm{F}}_3 \mathrm{if} \mathrm{one} \mathrm{is}$
$\mathrm{proton} \mathrm{and} \mathrm{other} \mathrm{is} \mathrm{a} \mathrm{neutron}. \mathrm{Hence}$
1.  ${\mathrm{F}}_1 > {\mathrm{F}}_2 > {\mathrm{F}}_3$
2.  ${\mathrm{F}}_2 > {\mathrm{F}}_1 > {\mathrm{F}}_3$
3.  ${\mathrm{F}}_1 = {\mathrm{F}}_3 > {\mathrm{F}}_2$
4.  ${\mathrm{F}}_1 = {\mathrm{F}}_2 > {\mathrm{F}}_3$