Match List-I with List-II

List-I	List-II
Evolutionary stages of human species	Time of origin
(A) Ramapithecus	(I) About 1.5 million years ago
(B) Australopithecines	(II) About 15 million years ago
(C) Homo erectus	(III) Between 100,000 - 40,000 years ago
(D) Neanderthal man	(IV) Two million years ago

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Observe the figures and answer the question.

Why is it that most zygotes divide only after certain amount of endosperm is formed?

Identify curative method (s) used to treat ADA deficiency disease in human.
A. Gene Therapy
B. Bone Marrow Transplantation
C. Complete Blood Replacement
D. Enzyme Replacement Therapy
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The first instance of construction of an artificial recombinant DNA molecule was carried out on the plasmid of:

Arrange the following steps in correct sequence with respect to HIV in a host.
(A) Infection of HIV in macrophage cells
(B) RNA replicates to form DNA using Reverse transcriptase
(C) Production of virus particles by host cell
(D) Incorporation of viral DNA in host genome
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Alcohol is a depressant, which means that even small amounts of alcohol slow down the actions of parts of the brain, so alcohol lengthens the time you take to respond to a stimulus.
Different people react differently to alcohol. In some people, it increase their feelings of aggression, and releases their inhibitions so that they are more likely to be violent or commit other crimes.
An alcoholic needs to drink quite large quantities of alcohol regularly. This causes many parts of the body to be damaged, because alcohol is poisonous to cells. Probably, there are many factors which decide whether or not a person becomes alcoholic. Over a long period of time, it can cause loss of memory and confusion. One way in which the damage is done is that alcohol in the body fluids draws water out of cells by osmosis.
Continuous intake of alcohol causes _________

Which one of the following features of pea plant is not suitable for genetical studies?

MONOHYBRID CROSS
The inheritance of flower color in the dog flower (Snapdragon or Antirrhinum sp.) can be understood by crossbreeding between true-breeding red-flowered (RR) and true-breeding white-flowered plants (rr). When they were crossed, F₁ (Rr) was pink. When F₁ was self-pollinated, the F₂ results were Red, Pink and White. Here the genotype ratios were exactly as expected, but the phenotype ratios have been changed. What happened was that R was not completely dominant over r and this made it possible to distinguish Rr as pink from RR (Red) and rr (White).
What will be the genotypic ratio in F₂ generation when F₁ (Rr) was self-pollinated?

Current and voltage in an a. c. circuit are given as
\( I = 10 \sin(50t -
\frac{\pi}{2}) \text{ A} \)
\( V = 200 \sin(50t) \text{ V} \) (t represents time)
The power dissipated in the circuit is

Particular solution of the differential equation \(\log \left(\frac{d y}{d x}\right)=x+y\) given that when x = 0 y = 0 is:

The mass of living organisms at a particular time at each trophic level is called____________

An insect moves along the ellipse \(\frac{x^2}{16}+\frac{y^2}{4}=1\), when the rate of change of abscissa is 4 times that of ordinate, then the insect lies in the quadrant:
A. \(I or II\)
B. \(III or IV\)
C. \(II or III\)
D. \(II or IV\)
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Read the following passage carefully and answer the given questions.
Plasmodium, a tiny protozoan is responsible for the disease malaria. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal. Innate immunity consist of four types of barriers. These are – (i) Physical barriers- skin on our body is the main barrier which prevents entry of the micro-organisms. (ii) Physiological barriers- Acid in the stomach, saliva in the mouth, tears from eyes-all prevent microbial growth. (iii) Cellular barriers- Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. (iv) Cytokine barriers- virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Allergy is due to the release of chemicals like histamine and serotonin from the mast cells. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Drugs like barbiturates, amphetamines, benzodiazepines, and other similar drugs, that are normally used as medicines to help patients cope with mental illnesses like depression and insomnia, are often abused.
Which one of the following drugs or chemicals can not quickly reduce the symptoms of allergy?