[B] Define: {any four}
1)Aerobic respiration.
2) Exertion.
3) fertilisation.
4) Time period of a simple pendulum.
5) Reflection of light
Answers
Explanation:
2)
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excretion
/ɪkˈskriːʃ(ə)n,ɛkˈskriːʃ(ə)n/
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noun
(in living organisms and cells) the process of eliminating or expelling waste matter.
a product excreted by a living organism or cell.
plural noun: excretions
"bodily excretions"
1) Cellular respiration
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate, and then release waste products.
3)Fertilisation, also spelt fertilization (also known as conception, fecundation and syngamy), is fusion of gametes to form a new organism of the same species. In animals, the process involves a sperm fusing with an ovum, which eventually leads to the development of an embryo.
4) A mass m suspended by a wire of length L is a simple pendulum and undergoes simple harmonic motion for amplitudes less than about 15º. The period of a simple pendulum is T=2π√Lg T = 2 π L g , where L is the length of the string and g is the acceleration due to gravity.
5)Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves.
Explanation:
1. The respiration which occurs in presence of oxygen is called aerobic respiration .
3. The process of combining the male gamete or sperm with female gamete or ovum to form a zygote called fertilisation.
4. It is defined as the time period taken by the pendulum to finish one full oscillation.
5. Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.
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