(a) A-Suctorial mouth, B-Hooks, C-Sucker,
D-Segments
(b) A-Sucker, B-Hooks, C-Suctorial mouth,
D-Proglottids
(c) A-Rostellum, B-Hooks, C-Sucker,
D-Proglottids
(d) A-Rostellum, B-Hair, C-Sucker, D-Segments
- Conules occur on the surface of
(a) Leucosolenia (b) Euspongia
(c) Spongilla (d) Schypha - Consider the following three statements and
select the correct option stating which one is true
(T) and which one is False( F)
I. Oparin of Russia and Haldane of England
proposed that the first form of life could have
come from pre existing non-living organic
molecules and the formation of life was preceded
by chemical evolution.
II. Based on observations made during a sea voyage
round the world, Charles Darwin concluded that
existing living forms share similarities to varying
degrees only among themselves.
III. Analogous structures are a result of convergent
evolution.
(I) (II) (III)
(a) F T T
(b) T F T
(c) T T F
(d) F F T - Read the statements with regard to frog. Which of
the statement is/are correct and incorrect?
(i) Vasa efferentia are 10-12 in number that arise
from testes.
(ii) The medulla oblongata passes out through
foramen of Monro and continues into spinal
cord.
(iii) Frogs are uricotelic.
(iv) Ovaries have no functional connection with
kidneys.
(a) Statement (i) and (iv) are correct while
statement ii) and iii) are incorrect
(b) Statement ii) and iii) are correct while
statement (i) and iv) are incorrect
(c) Statement (i), (ii) and (iv ) are correct while
statement iii) is incorrect
(d) Statement (i), (ii) and iii) are correct while
statement iv) is incorrect. - Match the following
Column I Column II
A. Zygomatic bone 1. Smallest bone of face
B. Lacrimal bone 2. Floor of cranium
C. Parietal Bone 3. Cheek bone of cranium
D. Sphenoid Bone 4. Roof of cranium
(a) A- 3, B-1, C-4, D-2
(b) A- 4, B- 2, C- 1, D-3
(c) A- 2, B- 3, C-4, D-1
(d) A-1, B-4, C- 3, D-2- Assertion: A correct concentration of Auxin and
Cytokinin is required for the development of root
and shoot in a callus
Reason: When ratio of kinetin to auxin is high,
then only shoots develop, but when the ratio is
low then only roots develop
(a) Both Assertion and Reason are true and
Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true and but
Reason is not the correct explanation of
Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false. - Number of cervical vertebrae in camel is
(a) more than that in rabbit
(b) less than that in rabbit
(c) same as that of whale
(d) more than that of horse - The amino acid Tryptophan is the precursor for
the synthesis of
(a) Cortisol & Cortisone
(b) Thyroxide & Triiodothyroxine
(c) Melatonin & Serotonin
(d) Estrogen & Progesterone - An isolated population of humans, with
approximately equal numbers of blue eyes and
brown eyes individuals, was decimated by an
earthquake. Only a few brown eyes people
remained to form the next generation. This kind
of change in the gene pool is called a
(a) Hardy –Weinberg equilibrium
(b) Bottle neck effect
(c) Blocked gene flow
(d) Founder effect - Assertion: An eye focused for seeing distant
objects is said to be at rest
Reason: In an eye focused at a distant object, the
ciliary muscles are fully relaxed
(a) Both Assertion and Reason are true and
Reason is the correct explanation of
Assertion.
(b) Both Assertion and Reason are true and but
Reason is not the correct explanation of
Assertion.