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Karthikeyan A · 2024-12-06T08:56:51.357Z

#biology #organisms #mrsgren • Movement: an action by an organism or part of an organism causing a change of position or place. • Respiration: the chemical reactions that break down nutrient molecules in living cells to release energy for metabolism. • Sensitivity: the ability to detect or sense stimuli in the internal or external environment and to make appropriate responses. • Growth: a permanent increase in size and dry mass by an increase in cell number or cell size or both. • Reproduction: the processes that make more of the same kind of organism. • Excretion: the removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements. • Nutrition: the taking in of materials for energy, growth and development; plants require light, carbon dioxide, water and ions; animals need organic compounds, ions and usually need water. MRS. GREN • Movement. • Respiration. • Sensitivity. • Growth and development. • Reproduction. • Excretion. • Nutrition.

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Karthikeyan A

Dec 06

Characteristics and classification of living organisms

in Karthikeyan

#biology #organisms #mrsgren

Movement: an action by an organism or part of an organism causing a change of position or place.
Respiration: the chemical reactions that break down nutrient molecules in living cells to release energy for metabolism.
Sensitivity: the ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.
Growth: a permanent increase in size and dry mass by an increase in cell number or cell size or both.
Reproduction: the processes that make more of the same kind of organism.
Excretion: the removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements.
Nutrition: the taking in of materials for energy, growth and development; plants require light, carbon dioxide, water and ions; animals need organic compounds, ions and usually need water.

MRS. GREN

Movement.
Respiration.
Sensitivity.
Growth and development.
Reproduction.
Excretion.
Nutrition.

2 comments

Comments (2)

Priya Sarath

7 ngày trước

Why do animals that live in water often have streamlined bodies for movement?
How do single-celled organisms like amoebas move?
What are the two types of respiration and how are they different?
How does MRS. GREN apply to microorganisms like bacteria or fungi?
How would you prove that a seed is alive using MRS. GREN?

Karthikeyan A

5 ngày trước

Replying to

Complete answer: A streamlined body provides a smooth surface to the aquatic animal's body which reduces resistance in the water by reducing friction and makes movement easy. Minimum resistance in water increases the speed of the movement, organisms move at a faster speed.
Amoebas use pseudopods, or "false feet", for movement and capturing prey, demonstrating the complexity of cellular structures. Unicellular organisms like Oxytricha trifallax use cilia, or hair-like structures, for movement and have unique mating processes.
Respiration releases energy stored in glucose and without it these cells would die. There are two types of respiration: Aerobic respiration occurs in the presence of oxygen and in most cells most of the time. Anaerobic respiration occurs without oxygen and much less frequently than aerobic respiration.
The characteristics of life can be remembered using the acronym MRS GREN. This acronym is often used to help remember all the necessary features of living organisms: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition.
These criteria can be remembered using the acronym MRS C GREN, which stands for:
Movement.
Respiration.
Sensitivity.
Control.
Growth.
Reproduction.
Excretion.
Nutrition.