Mock Test

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

Total Questions: 20

Q1. Which hormone is secreted by the ovaries and plays a role in the menstrual cycle?

Testosterone Insulin Progesterone Thyroxine
Q2. The 'Out of Africa' theory suggests that modern humans originated in Africa and then migrated to:

Only Europe Only Asia All other continents Only Australia
Q3. Humans are classified in which kingdom?

Plantae Fungi Animalia Protista
Q4. Which base pairs with Adenine (A) in DNA?

Cytosine (C) Guanine (G) Thymine (T) Uracil (U)
Q5. In the absence of fertilization, the corpus luteum degenerates, leading to a drop in:

FSH and LH Estrogen and progesterone GnRH Androgens
Q6. What is a key adaptation for survival in a desert biome?

Thick fur Ability to store water Hibernation Broad leaves for photosynthesis
Q7. Neurotransmitters are synthesized in which part of the neuron?

Dendrites Axon terminals Cell body (soma) and axon terminals Synaptic cleft
Q8. The process of breaking down fatty acids to produce acetyl-CoA for entry into the Krebs Cycle is called:

Glycolysis Gluconeogenesis Beta-oxidation Lipolysis
Q9. The main protein in red blood cells that binds to oxygen is:

Albumin Globulin Fibrinogen Hemoglobin
Q10. What is the primary ecological role of a 'foundation species' in an ecosystem?

It is the top predator in the food web. It is a parasitic species that weakens other species. It plays a major role in structuring a community, often by providing habitat or influencing the availability of resources. It is an indicator species of pollution.
Q11. Which kingdom includes unicellular eukaryotes?

Monera Protista Fungi Plantae
Q12. Which part of the immune system is responsible for producing antibodies?

T-cells Macrophages B-cells Dendritic cells
Q13. A large-scale mutation affecting the structure of a chromosome is known as a:

Gene mutation Point mutation Chromosomal aberration Nonsense mutation
Q14. Which of the following is a key component used to remove the nucleus from an egg cell during SCNT?

A scalpel A micropipette A centrifuge A gene gun
Q15. Which plasma protein plays a role in maintaining osmotic pressure?

Fibrinogen Globulin Albumin Prothrombin
Q16. The process by which an animal learns to associate two stimuli is called:

Habituation Imprinting Classical conditioning Operant conditioning
Q17. Which of the following is NOT a primary goal of conservation biology?

To protect biodiversity at all levels To prevent species extinction To maximize human exploitation of natural resources To restore degraded ecosystems
Q18. Which part of the neuron contains the nucleus and organelles?

Axon Dendrite Cell body (Soma) Synapse
Q19. In an aquatic ecosystem, what is the primary role of phytoplankton in the food web, particularly in terms of energy flow?

Primary consumers, feeding on zooplankton Secondary consumers, preying on zooplankton Decomposers, breaking down dead organic matter Producers, converting solar energy into chemical energy
Q20. What is the main function of the heart?

To digest food To pump blood To filter waste To produce hormones

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