Science Practice Quiz 62

Q1.Where are plant hormones typically synthesized in relation to their area of action?

A. At the exact same location where they act B. At places away from where they act C. Only in the roots of the plant D. Only in the leaves of the plant

Q2.Which plant hormone is synthesized at the shoot tip and helps cells to grow longer?

A. Gibberellins B. Cytokinins C. Abscisic acid D. Auxin

Q3.How does auxin cause a plant to bend towards light?

A. It stimulates cells on the illuminated side to grow longer B. It inhibits growth on the shady side of the shoot C. It diffuses towards the shady side and stimulates cells there to grow longer D. It causes the plant to reorient its leaves directly towards the light source

Q4.Which plant hormone, like auxins, helps in the growth of the stem?

A. Cytokinins B. Abscisic acid C. Gibberellins D. Ethylene

Q5.What is the primary function of cytokinins in plants?

A. Inhibiting overall plant growth B. Promoting cell division C. Causing the wilting of leaves D. Helping cells to grow longer

Q6.In which areas are cytokinins found in greater concentration due to rapid cell division?

A. Mature leaves and woody stems B. Roots and bark tissues C. Fruits and seeds D. Oldest parts of the plant

Q7.Which plant hormone is an example of one that inhibits growth?

A. Auxin B. Gibberellins C. Cytokinins D. Abscisic acid

Q8.What is one of the specific effects of Abscisic acid mentioned in the text?

A. Promoting stem elongation B. Stimulating rapid cell division C. Wilting of leaves D. Causing the plant to bend towards light

Q9.Which of the following is identified as a plant hormone in the provided text?

A. Insulin B. Thyroxin C. Oestrogen D. Cytokinin

Q10.What is the term for the gap between two neurons?

A. Dendrite B. Synapse C. Axon D. Impulse

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Science Practice Quiz 62