VFA Mixed Practice Test #264

Question 1

An example of a vestigial organ in humans is:

Accepted Answer

Appendix — Vermiform appendix is a vestigial organ — evolutionary remnant of caecum.

Answer

Heart

Answer

Liver

Answer

Brain

Question 2

DNA has how many strands?

Accepted Answer

2 (double helix) — DNA is a double-stranded antiparallel helix (Watson-Crick, 1953).

Answer

1

Answer

3

Answer

4

Question 3

Kerala's physiographic zones:

Accepted Answer

Highland, Midland, Lowland — West: lowland (coast 590 km). Middle: midland (rice, coconut). East: highland (Western Ghats).

Answer

Only coast

Answer

Only hills

Answer

Only plains

Question 4

Keralapanineeyam, the definitive Malayalam grammar, was written by:‌​‍

Accepted Answer

A.R. Raja Raja Varma — A.R. ‌​‍Raja Raja Varma wrote Keralapanineeyam, modelled after Panini's Sanskrit grammar. He is called 'Kerala Panini'.

Answer

Thunchaththu Ezhuthachan

Answer

Hermann Gundert

Answer

Kumaranasan

Question 5

Golgi apparatus function:‌​‍

Accepted Answer

Protein modification, sorting, packaging — Cis (near ER) and trans faces. ‌​‍Glycosylation, phosphorylation. Forms vesicles including lysosomes.

Answer

Photosynthesis

Answer

Energy production

Answer

DNA replication

Question 6

Peptide bond forms between:‌​‍

Accepted Answer

Amino acids (COOH + NH₂ → peptide + H₂O) — Condensation reaction. Protein = polypeptide. 20 standard amino acids.‌​‍

Answer

Fatty acids

Answer

Sugar-phosphate

Answer

Nucleotides

Question 7

Kinetic energy of a body of mass m moving with speed v is:‌​‍

Accepted Answer

½mv² — K = ½mv² = p²/(2m). SI unit Joule.‌​‍

Answer

mv²

Answer

m²v

Answer

mv

Question 8

Nylon is a:‌​‍

Accepted Answer

Synthetic polyamide polymer — Nylon (Wallace Carothers, 1935) is a synthetic polyamide — nylon-6, nylon-66.‌​‍

Answer

Mineral

Answer

Natural fibre

Answer

Natural polyester

Question 9

A history teacher wants to make a lesson on ancient civilizations more interactive and engaging, moving beyond traditional textbook discussions. Which combination of teaching aids and ICT tools would be most effective for achieving this goal?

Accepted Answer

C. Integrating virtual reality (VR) tours of historical sites and interactive quizzes. — Virtual Reality (VR) tours offer immersive experiences, allowing students to 'visit' ancient sites and visualize historical contexts dynamically. Coupled with interactive quizzes, this approach significantly enhances engagement and provides a multi-sensory learning experience beyond passive observation, making the lesson highly interactive and memorable.

Answer

A. Relying solely on a detailed map and a timeline chart.

Answer

B. Using a documentary video and encouraging group discussions.

Answer

D. Distributing photocopies of primary source documents for individual reading.

Question 10

Which of the four primary tissue types is characterized by tightly packed cells forming continuous sheets that cover body surfaces, line internal organs, and form glands, providing protection and regulating passage of substances?

Accepted Answer

D. Epithelial tissue — Epithelial tissue is composed of closely aggregated cells with very little extracellular matrix, forming coverings, linings, and glandular structures. Its main functions include protection, secretion, absorption, and filtration. Connective tissue provides support, muscle tissue enables movement, and nervous tissue transmits signals.

Answer

A. Connective tissue

Answer

B. Muscle tissue

Answer

C. Nervous tissue

VFA Mixed Practice Test #264