481. One of the following plants is a rich variety of timber:
A. Cassia fistula
(B. Dalbergia sissoo)
C. Acacia Arabica
D. Morus Alba
482. How can gene therapy be brought about?
A. By inserting the normal gene through bone marrow cells
B. By injecting the normal gene into the host
C. By using certain chemicals
(D. Through radiotherapy)
483. The technology for achieving eugenic aims is:
A. Immunization
B. Bioremediation
(C. Cloning)
D. Vaccination
484. Which of the followings can reproduce naturally by cloning?
A. Animals
B. Plants
C. Insects
(D. All of these)
485. In the human body, 99% of the total mass is formed of:
(A. 8 bio elements)
B. 9 bio elements
C. 3 bio elements
D. 6 bio elements
486. The central fluid-filled cavity of the blastula is known as:
A. Archenteron
(B. Blastocoels)
C. Blastocyst
D. Morula
487. Genetic identity of a human male is determined by:
A. Autosomes
B. Nucleolus
C. Cell organelles
(D. Sex chromosomes)
488. Basement membrane is made up of:
(A. Non-cell product of epithelial cell)
B. Epidermal cell only
C. Endodermal cell
D. Both B and C
489. Which one of the following mammalian cells is not capable of metabolizing glucose to carbon dioxide aerobically?
A. Liver cells
(B. Red blood cells)
C. White blood cells
D. Unstriated muscle cells
490. The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds; this stable form is called __?
A. An organ
(B. A molecule)
C. Tissue
D. Both A and C
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