Multiple Choice QuestionsWhich of the following is a transparent tissue
Tendon
Hyaline cartilage
Fibrous cartilage
All of these
B.
Hyaline cartilage
Hyaline cartilage has a clear, homogenous, transparent bluish-green matrix. It gives glass like appearance. A few bundles of small white fibres are imbedded in the matrix. It is present in the end of limb bones (called hyaline caps).
Blood calcium level can be increased by the administration of
glucagon
thyroxine
parathormone
caleitonin
C.
parathormone
Parathyroid hormones are released when the level of ca is less in blood it increases level of ca in the blood while calcitocine hormones reciprocates the effect.
Which of the following is both exocrine and endocrine gland
Liver
Pancreas
Thyroid
Adrenal
B.
Pancreas
Pancreas are partially exocrine and partially endocrine gland.
Which of the following is the part of mid brain of rabbit?
Diencephalon
Cerebrum
Corpora quadrigemina
None of the above
C.
Corpora quadrigemina
The dorsal part of mid brain (mesencephalon) is in the form of two pairs (i.e., four) of spherical optic lobes (corpora quadrigemina) located behind the pineal body optic lobes are reduced merely as reflex centres of visual and auditory.
Which of the following assists in the locomotion of the organism stated
Epithelium of' Pheretima
Trichocysts of Paramecium
Pedicellaria of Star fish
Posterior sucker of Hirudinaria
D.
Posterior sucker of Hirudinaria
Hirudinaria belongs to class Hirudinea of phylum-Annelida.
It has definite number of body segments (26 + 7= 33). It feeds on blood (sanguivorous) and has anticoagulant hirudin in its saliva. Hirudinaria have a posterior sucker for locomotion. Leech creep by looping and swim by undulations of body.
Phospholipids are
amphipathic
hydrophobic
amphibolic
none of these
A.
amphipathic
The phospholipid is a bipolar molecule having long fatty acid called hydrophobic tail (water hating) or non-polar end. Another is hydrophillic (water loving) or polar end, hence, it is amphipathic in nature
The epithelial lining in the alveoli of the frogs facing lung cavity is
squamous ciliated
columnar ciliated
columnar nonciliated
squamous nonciliated
B.
columnar ciliated
Alveoli is highly vascularised with an internal lining of very thin squamous epithelium, which always remain moist by mucus. The epithelial cells at the linar most margins of septa facing lung cavity are columnar and ciliated.
The first heart sound is produced when
diastole begins
semilunar valve close quickly
interventricular pressure decrease
bicuspid and tricuspid valve close quickly
D.
bicuspid and tricuspid valve close quickly
During working of heart two sounds are produced lub and dub. First sound (i.e., lub) is produced when auriculoventricular (tricuspid and bicuspid) valves are closed or at the end of diastole. The second sound (i.e., dub) is produced when semilunar valves at the base of dorsal aorta are closed or at the end of systole.
Third cleavage of frog's development is
equatorial
vertical
latitudinal
none of these
C.
latitudinal
First and second cleavage in frog are holoblastic, complete, equal, vertical, whereas third cleavage is holoblastic, complete, unequal, latitudinal or horizontal and near the animal pole. It results in the formation of 8 cells of three are black micromeres which have less or no yolk, so divide faster and 4 are colourless macromeres
The scientist, who described the birds as glorified reptiles, was
Romer
Huxley
Mendel
Robert Hooke
B.
Huxley
Huxley stated that birds are glorified reptiles. The missing link Archaeopteryx is a fossil lizard bird. It was founded by Andreas Wagner (1861) from upper Jurassic limestone rocks of Solenbofen in Bowaria, Germany
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