Last updated on September 2nd, 2024 at 10:40 pm
Why do mosquito larvae and pupae come to the water surface?
Answer: They come to the surface to breathe air, as they live in water but require air to respire.
What are the stages in a frog’s life cycle?
Answer: A frog’s life cycle includes egg (spawn), embryo, tadpole, froglet, and adult frog stages.
How does a tadpole differ from a froglet?
Answer: A tadpole has a tail and lives in water, while a froglet has developing legs, a shrinking tail, and begins to spend time on land.
What is the function of stomata in plants?
Answer: Stomata are tiny pores on leaf surfaces that help plants take in and release air during respiration.
What is the crescograph and who invented it?
Answer: The crescograph is a device invented by Jagadish Chandra Bose to measure plant growth and responses to stimuli.
Why is reproduction necessary for living beings?
Answer: Reproduction is necessary for the continuity of life and to maintain the existence of a species.
How do touch-me-not plants respond to stimuli?
Answer: Touch-me-not plants fold their leaves when touched, demonstrating a response to physical stimuli.
What happens during seed germination?
Answer: During germination, water softens the seed coat, allowing the embryo inside to develop into a plant.
How do plants excrete?
Answer: Plants excrete excess water and minerals in the form of small droplets on leaves.
What is the difference between breathing and respiration?
Answer: Breathing is the physical process of taking in air, while respiration is the broader metabolic process of using oxygen for energy production.
How does a plant’s root system respond to gravity?
Answer: Plant roots generally grow downwards in response to gravity, regardless of the plant’s orientation.
What is the importance of the larval stage in a mosquito’s life cycle?
Answer: The larval stage is crucial for growth and development before the mosquito transforms into a pupa and then an adult.
How does the habitat of a frog change during its life cycle?
Answer: Frogs start life in water as eggs and tadpoles, then gradually adapt to spend time on land as froglets and adults.
What is the role of sunlight in a plant’s life after germination?
Answer: After germination, sunlight is essential for further growth and development of the plant, enabling photosynthesis.
How do scientists determine if something is living or non-living?
Answer: Scientists categorize objects as living or non-living based on whether they exhibit characteristics like growth, reproduction, respiration, and response to stimuli.
