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Class 10 · Science · Medium
→Which statement about thyroxine and iodine is most scientific?
Class 10 · Science · Medium
→What is the combined benefit of increased heartbeat and breathing rate in an emergency?
Class 10 · Science · Medium
→Why does adrenaline help make more glucose available from the liver during fear?
Class 10 · Science · Medium
→If the pancreas does not make enough insulin, why can blood sugar remain high for longer after food?
Class 10 · Science · Medium
→Insulin secretion increases when blood sugar rises and decreases when sugar becomes normal. Which principle does this show?
Class 10 · Science · Hard
→If hormone receptors of a target cell change, what result is possible?
Class 10 · Science · Medium
→Hormones spread through the blood throughout the body, yet why do they affect only target organs?
Class 10 · Science · Easy
→Why do endocrine glands release their hormones directly into blood?
Class 10 · Science · Easy
→Which option gives the best match between plant hormone and function?
Class 10 · Science · Medium
→Which experiment will best show the effect of gibberellin?
Class 10 · Science · Medium
→Why is abscisic acid considered like a stress hormone?
Class 10 · Science · Medium
→If the effect of cytokinin decreases in a plant, which level of growth may be affected first?
Class 10 · Science · Medium
→Why is the growth of a pollen tube towards an ovule considered directional?
Class 10 · Science · Hard
→Folding of touch-me-not leaves and coiling of a tendril are both related to touch. What is the main difference between them?
Class 10 · Science · Medium
→In a horizontally placed plant, the root bends downward and the stem bends upward. Which conclusion is most correct?
Class 10 · Science · Hard
→If water is available upward for a root while gravity acts downward, what understanding does this situation test?
Class 10 · Science · Hard
→High auxin concentration may inhibit growth in roots but promote growth in stems. What conclusion follows from this?
Class 10 · Science · Medium
→Why does a plant bend towards light if auxin collects more on the shaded side of the stem?
Class 10 · Science · Hard
→A plant stem bends towards light in unilateral light. If unequal distribution of auxin is stopped, what will happen?
Class 10 · Science · Medium
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