Mock Test

Exam: RRB Group D Subject: General Science Topic: Biology

Total Questions: 20

Q1. The main component of the synovial fluid, which lubricates joints, is:

Collagen Elastin Hyaluronic acid Chondroitin sulfate
Q2. Which chamber of the heart pumps oxygenated blood to the rest of the body?

Right atrium Right ventricle Left atrium Left ventricle
Q3. Which animal is known for its complex social structures and communication, like the bee waggle dance?

Lion Eagle Bee Shark
Q4. Which of the following joints allows a bone to glide or slide over another bone?

Hinge Joint Ball-and-Socket Joint Gliding Joint Saddle Joint
Q5. Which scientist is known as the 'Father of Microbiology'?

Louis Pasteur Robert Koch Antonie van Leeuwenhoek Alexander Fleming
Q6. Which animal exhibits external fertilization?

Cow Cat Fish Chicken
Q7. The process of urine formation involves which three main steps?

Filtration, reabsorption, secretion Absorption, secretion, excretion Filtration, digestion, absorption Respiration, secretion, reabsorption
Q8. The M line is located in the center of the:

I band A band Sarcomere Z-line
Q9. The term 'morphology' in taxonomy refers to the study of:

Internal structure Physiological functions Form and structure of organisms Reproductive processes
Q10. What is the primary function of a promoter in a gene construct?

To terminate transcription To signal the start of transcription To enhance mRNA stability To modify the protein structure
Q11. Which of the following is an example of a producer in an ecosystem?

Lion Grass Fungus Bacteria
Q12. Which part of the small intestine is the primary site for the absorption of most vitamins and minerals?

Duodenum Jejunum Ileum All equally
Q13. Which of the following events occurs during the latent period of muscle contraction?

Muscle fiber shortens. Sarcomeres shorten. Action potential propagates along sarcolemma. Cross-bridges detach.
Q14. The binomial system of nomenclature, assigning a two-part scientific name to each organism, was introduced by:

Aristotle Charles Darwin Carolus Linnaeus Gregor Mendel
Q15. The structure that prevents food from entering the trachea during swallowing is the:

Uvula Epiglottis Tongue Pharynx
Q16. In ecological risk assessment for conservation, the concept of 'synergistic effects' is important because it highlights:

The additive impact of multiple threats on a species. The amplified impact of multiple threats that is greater than the sum of their individual effects. The isolated impact of single threats. The beneficial effects of environmental stressors.
Q17. In eukaryotes, which of the following molecules is responsible for delivering the correct amino acid to the ribosome during translation?

mRNA. rRNA. tRNA. snRNA.
Q18. Adenine (A) always pairs with which base in DNA?

Guanine Cytosine Thymine Uracil
Q19. The renal cortex is the outer layer of the kidney, containing the glomeruli and convoluted tubules. Which structural component is NOT found in the cortex?

Peritubular capillaries Collecting ducts Loop of Henle Bowman's capsule
Q20. Which adaptation helps animals in cold climates to maintain their body temperature?

Short appendages Thin fur Large surface area to volume ratio Color changes to absorb more heat

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