द्वार कोशिकाओं (guard cells) में निम्नलिखित में से किस तत्व के संचय होने पर रंध्र (stomata) खुल जाते हैं?

Which one among the following statements about facilitated transport in plants is correct?

In terms of photoperiodism, sugarcane is primarily classified as which type of plant?

Assertion (A): Leaves are green in color. Reason (R): Chlorophyll, a green pigment, is present in the leaves. Choose the correct option: