Tag: lesson-5818

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Pollen is released”,”Root hairs arise”,”Leaves are attached”,”Xylem becomes phloem”],”correct”:2,”type”:”mcq”,”explain”:”A node is the region of the stem that bears a leaf (and usually a bud).”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Only in the pith”,”Scattered in the ground tissue”,”Only in the epidermis”,”In a ring”],”correct”:3,”type”:”mcq”,”explain”:”Dicot stems usually have bundles in a ring, allowing a vascular cambium to form.”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Confined to the root”,”Absent”,”In one ring with cambium”,”Scattered”],”correct”:3,”type”:”mcq”,”explain”:”Monocot stems generally have scattered closed bundles without a vascular cambium.”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Leaf”,”Root”,”Stem”,”Flower”],”correct”:2,”type”:”mcq”,”explain”:”Eyes of a potato are axillary buds, showing it is a swollen underground stem (tuber).”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“A tap root”,”A leaf tendril”,”An underground stem”,”A fruit”],”correct”:2,”type”:”mcq”,”explain”:”Ginger and banana have horizontal underground stems called rhizomes.”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Seed dispersal”,”Water absorption from soil”,”Pollination”,”Gas exchange”],”correct”:3,”type”:”mcq”,”explain”:”Lenticels are pores in bark that permit diffusion of gases to living tissues.”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Stomatal guard cells”,”Vascular cambium”,”Spongy mesophyll”,”Root cap”],”correct”:1,”type”:”mcq”,”explain”:”Vascular cambium produces secondary xylem inward and secondary phloem outward.”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Inside the root cap”,”Of the flower ovary”,”Of the leaf blade”,”Between two successive nodes”],”correct”:3,”type”:”mcq”,”explain”:”An internode is the length of stem between two nodes.”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Root”,”Seed”,”Anther”,”Stem”],”correct”:3,”type”:”mcq”,”explain”:”Many tendrils (e.g. grape) are stem branches specialised for climbing.”}

{“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“True”,”False”],”correct”:1,”type”:”true_false”,”explain”:”Many stems store food, including tubers, rhizomes and corms.”}