Pls help me with these two questions i need your Help ASAP 10 POINTS
Rinu left some onions in the vegetable rack for 5 to 6 days. She found some green leaf like structures coming out of it. What is it ? How is it possible for the plant to grow in this manner ?
One morning Kiran noticed growth of fern plant in different areas of her garden. She didn’t plant any seeds to grow fern. Then how is this possible?
Answers
Answer:
Those are auxiliary buds growing from nodes and internodes under suitable condition.
The surrounding environment provided a suitable condition for the nodes and internodes to grow into primary and auxiliary buds.The scaly leaves of onion have turned fleshy when it was kept at suitable temperature.
Ferns come from a single spore. Spores become gametophytes,as a fern develops, the young stipe or stem of fronds unfurls.Spores dropped from the fronds of an established fern have developed prothallium on the gravel surface.So ferns have developed automatically in her garden.
Explanation:
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Answer:
As maturation proceeds, necks soften and the weight of the leaves causes the tops to fall over. “Tops down” is the physiological response that results from compounds shuttled from the onion's leaves to its scales; consequently, the bulb swells and the tops dry down. The onion is a health food.
Ferns can multiply naturally via two mechanisms, vegetative and sexual. Vegetative reproduction occurs by producing new plantlets along underground runners, or rhizomes. Sexual reproduction occurs via the production of spores, which lead to the production tiny plants that make both eggs and sperm.