The barnacles growing on the back of whale are example of:

Choose the correct statements about organic farming:
(A) It does not use pesticides and urea.
(B) It uses only naturally produced inputs like compost.
(C) It utilizes genetically modified crops.
(D) It produces fruits rich in minerals and vitamins.
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Jawless fish probably evolved around:

The direction of transport of sperm in human is-
(A). Vas deferens
(B). Vasa efferentia
(C). Epididymis
(D). Ejaculatory duct
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Sediment left after secondary treatment of sewage/waste is known as:

Match List-I with List-II

List-I(Stages of Human Evolution)	List-II (Characteristics)
(A) Ramapithecus	(I) Lived in East African grasslands
(B) Australopithecus	(II) Lived near East and central Asia
(C) Homo habilis	(III) Hairy and walked like gorillas
(D) Neanderthal Man	(IV) First human like being

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Read the following passage carefully.
Restriction enzyme
Restriction enzymes cut the strand of DNA a little away from the center of the palindrome sites, but between the same two bases on the opposite strands. This leaves single stranded portions at the ends. There are overhanging stretches called sticky ends on each strand. These are named so because they form hydrogen bonds with their complementary cut counterparts. This stickiness of the ends facilitates the action of the enzyme DNA ligase. The word palindromes refer to group of letters that forms the same words when read both forward and backward. Restriction endonucleases are used in genetic engineering as molecular scissors.
Overhanging stretches on each strand is called:

Which one of the following diseases is non-infectious?

Choose the correct statements:
A. \(\alpha\)-particle close to the nucleus suffers large scattering.
B. Hydrogen atom consists of a single proton and a single neutron.
C. Chadwick discovered neutron.
D. In \(\gamma\)-decay, photons are emitted.
E. The nucleus force between two nucleons falls rapidly to zero as their distance is less than a few femtometers.
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The number of vectors of unit length perpendicular to both the vectors \(\vec{a} = \hat{i} + 2\hat{j} + 3\hat{k}\) and \(\vec{b} = \hat{i} - \hat{j} + 3\hat{k}\) is:

The value of \(\sin ^{-1}\left(\frac{8}{17}\right)+\sin ^{-1}\left(\frac{3}{5}\right)\) is :

The position of antipodals in mature embryo sac in angiosperm plant is -

Select the incorrect statements with respect to the origin and evolution of man.
A. Ramapithecus was more man like primates
B. Dryopithecus was more ape- like primates
C. Australopithecines probably lived in East Asian grasslands
D. The first human like being the hominid was called Homo habilis
Choose the correct answer from the options given below: