Full fledge assessment (Please watch the above videos before attempting this assessment)

Question 1 of 20
Q1. In chemotropism, the sugary substance which attracts the pollen tube is secreted by the
  • Stigma
  • Ovule
  • Pollen
  • Tube cell

Solution :

In chemotropism, the sugary substance which attracts the pollen tube is secreted by the stigma. 
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Q2. Which of the following plant hormones promotes rooting in plants?
  • Auxin
  • Cytokinin
  • Ethylene
  • Gibberellin

Solution :

Auxins promote rooting in plants. 
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Q3. Which of the following hormones are secreted by the gonads in males and females, respectively?
  • Oestrogen, progesterone
  • Progesterone, testosterone
  • Testosterone, oxytocin
  • Testosterone, oestrogen

Solution :

Testes in males secrete the male sex hormone called testosterone, while ovaries in females secrete the female sex hormone called oestrogen and progesterone. 
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Q4. Iodine is required for the synthesis of
  • Thyroxine
  • Insulin
  • Somatostatin
  • Adrenaline

Solution :

Iodine is required for the synthesis of thyroxine. 
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Q5. ________ is the main thinking part of the brain.
  • Forebrain
  • Hindbrain
  • Midbrain
  • Cranium

Solution :

Forebrain is the main thinking part of the brain. 
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Q6. Regulation of the menstrual cycle is done by the hormone 
  • Progesterone
  • Testosterone
  • Oxytocin
  • Adrenaline

Solution :

Hormones oestrogen and progesterone regulate the menstrual cycle in females. 
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Q7. Photoreceptors in ________ detect _______.
  • Ears, sound
  • Eyes, light
  • Skin, heat
  • Tongue, taste

Solution :

Photoreceptors present in the eyes detect light. 
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Q8. Motor neurons communicate with the muscle fibres through the neurotransmitter at the 
  • Neuromuscular junction
  • Synapse
  • Synaptic cleft
  • Synaptic neurojunction

Solution :

Motor neurons communicate with the muscle fibres through the neurotransmitter at the neuromuscular junction.
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Q9. Swelling of the ___________ gland is known as goitre. 
  • Thyroid
  • Pineal
  • Parathyroid
  • Adrenal

Solution :

Swelling of the thyroid gland is known as goitre. 
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Q10. Which of the following is an emergency hormone in plants?
  • Abscisic acid
  • Cytokinin
  • Ethylene
  • Gibberellin

Solution :

Abscisic acid is an emergency hormone in plants. 
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Q11. The endocrine system communicates messages through the use of 
  • Hormones
  • Nerve impulses
  • Electric signals
  • Neurotransmitters

Solution :

The endocrine system communicates messages through the use of biochemicals called hormones. 
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Q12. Which sensory receptors detect heat present in the environment?
  • Olfactory receptors
  • Phonoreceptors
  • Thermoreceptors
  • Mechanoreceptors

Solution :

Thermoreceptors present in the skin detect heat present in the environment. 
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Q13. The directional growth movement in response to the stimulus of contact is called 
  • Thigmotropism
  • Geotropism
  • Hydrotropism
  • Chemotropism

Solution :

The directional growth movement in response to the stimulus of contact is called thigmotropism. 
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Q14. Neurotransmitters are present in the _________ of a neuron.
  • Axonal bulbs
  • Dendrites
  • Cyton
  • Axoplasm

Solution :

Neurotransmitters are present in the axonal bulbs of a neuron. 
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Q15. The neurotransmitter released at the synapse is 
  • Acetylcholine
  • Glutamic acid
  • Aspartic acid
  • Epinephrine

Solution :

The neurotransmitter acetylcholine is released by the bulbs present in the axon at the synapse. 
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Q16. Which parts of the brain are not matched correctly with their functions?
  • Spinal cord → Respiration control centre
  • Medulla → Involuntary actions
  • Cerebrum → Thinking and planning
  • Cerebellum → Body balance

Solution :

The pons varolli acts as a respiration control centre in the body. 
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Q17. Which of the following minerals is required for the synthesis of thyroxine?
  • Iodine
  • Calcium
  • Magnesium
  • Potassium

Solution :

Iodine is required for the synthesis of thyroxine. 
Still have doubt? Watch Video
Q18. Which of the following hormones prevents premature fall of fruits and leaves? 
  • Auxin
  • Cytokinin
  • Ethylene
  • Gibberellin

Solution :

Auxins prevent premature fall of fruits and leaves. 
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Q19. Which of the following is not an endocrine gland? 
  • Salivary glands
  • Pineal gland
  • Pituitary gland
  • Adrenal glands

Solution :

Salivary glands are exocrine glands. 
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Q20. Cytoplasm of the nerve cell is called
  • Endoplasm
  • Neuroplasm
  • Nucleoplasm
  • Protoplasm

Solution :

Cytoplasm of the nerve cell is called neuroplasm. 
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