Kvpy

In human brain, two cerebral hemispheres are connected by a bundle of fibers which is known as 

 (A) Medulla oblongata 

(B) cerebrum 

(C) cerebellum 

(D) corpus callosum 

Zygotic meiosis is a characteristic of 

(a) Marchantia 

(b) Fucus 

(c) Funaria 

(d) Chlamydomonas 

Which one of the following statements is correct about placenta?

(a) Placenta is permeable to all bacteria

(b) Oxygen and carbon dioxide cannot diffuse through the placenta

(c) Waste products diffuse out of placenta into maternal blood

(d) Placenta does not secrete chorionic gonadotropins

Biological diversity increases with the productivity of an ecosystem. In which of the following habitats do we see the greatest diversity of species?

(a) Tropical dry grasslands

(b) Temperate deciduous forests

(c) Alpine grasslands

(d) Tropical evergreen forests

Enzyme X extracted from the digestive system hydrolyses peptide bonds. Which of the following is probable candidate to be enzyme X?

(a) Amylase

(b) Lipase

(c) Trypsin

(d) Maltase

Thermal expansion of a solid is due to the

(A)  symmetric characteristic of the inter atomic potential energy curve of the solid

(B)  asymmetric characteristic of the inter atomic potential energy curve of the solid

(C)  double well nature of the inter-atomic potential energy curve of the solid

(D)  Rotational motion of the atoms of the solid  

A gas at initial temperature T undergoes sudden expansion from volume V to 2V. Then –

(A)  The process is adiabatic

(B)  The process is isothermal

(C)  The work done in this process is nRTln_e(2) where n is the number of moles of the gas.

(D)  The entropy in the process does not change 

In the conversion of RuBP to GP (PGA)

(a) a molecule of carbon dioxide is accepted

(b) a stable six-carbon molecule is produced

(c) ATP is generated

(d) hydrogen is combined with oxygen to form water

Consider arrangements A and B for making a torch:

Now, consider the following statements. 

I. Torch A is brighter. 

II. Torch B is brighter. 

III. Torch A lasts longer. 

IV. Torch B lasts longer. 

Which of the above statements are correct? 

(a) Statements I and III are correct 

(b) Statements II and IV are correct 

(c) Statements I and IV are correct 

(d) Statements II and III are correct

Where is the third ventricle of the brain located ?

(A)  Cerebrum

(B)  Cerebellum 

(C)  Pons varoli

(D)  Diencephalon