Materi Ciri Makhluk Hidup SMP Kelas 7

Summary

In this educational video, Heriana, a science teacher from SMP Negeri 3 Cikesal, introduces Grade 7 students to the concepts of biotic and abiotic factors, along with the characteristics of living things. The video explains the distinction between living and non-living things and explores key characteristics such as respiration, movement, growth, irritability, reproduction, nutrition, adaptation, and excretion. Through clear examples, the teacher helps students understand the importance of these traits for survival and how different organisms exhibit them. The video aims to deepen the students' understanding of biology in a fun and engaging way.

Takeaways

• 😀 Living things are classified as biotic, while non-living things are classified as abiotic.
• 😀 Biotic components include humans, animals, plants, and microorganisms like bacteria.
• 😀 Abiotic components include air, water, light, temperature, and humidity.
• 😀 The characteristics of living things include breathing, movement, growth, and development.
• 😀 Breathing (respiration) involves inhaling oxygen and exhaling carbon dioxide and water vapor.
• 😀 Living things move in different ways: active movement in animals and passive movement in plants.
• 😀 Growth refers to physical size change, while development is the process of reaching maturity.
• 😀 Living things show irritability, meaning they respond to stimuli (e.g., mimosa leaves closing when touched).
• 😀 Reproduction is essential for the survival of species and can occur through viviparous, oviparous, or ovoviviparous methods in animals and sexual or vegetative reproduction in plants.
• 😀 Nutrition is crucial for survival, with autotrophs like plants making their own food and heterotrophs like humans and animals relying on others for food.
• 😀 Adaptation helps living things survive in their environments (e.g., chameleons changing color, lizards shedding tails).

Q & A

What is the difference between biotic and abiotic things?

Biotic things are living organisms such as humans, animals, plants, and microorganisms, while abiotic things are non-living, such as air, light, water, temperature, and humidity.

What is the purpose of breathing in living organisms?

Breathing, or respiration, allows living organisms to inhale oxygen and exhale carbon dioxide, providing them with the energy needed to survive.

How do different animals breathe?

Humans breathe using lungs, worms breathe through their skin, fish use gills, frogs use gills as tadpoles and lungs as adults, and insects use a tracheal system.

How do plants breathe?

Plants breathe through small openings in their leaves called stomata, which allow them to exchange gases for respiration.

What is the difference between active and passive movement?

Active movement refers to animals and humans that can move from one place to another, while passive movement refers to plants that move in place, such as bending towards light.

What is the difference between growth and development in living organisms?

Growth refers to changes in the size and shape of the organism, while development refers to the process of becoming more mature over time.

What does irritability mean in living organisms?

Irritability means the ability of living organisms to respond to stimuli, such as a plant’s reaction to light or a mimosa plant’s leaves closing when touched.

What are the three types of animal reproduction?

Animals reproduce through viviparous (giving birth), oviparous (laying eggs), and ovoviviparous (laying eggs and giving birth).

How do plants reproduce?

Plants can reproduce sexually through pollination, which involves the transfer of pollen between the pistil and stamens of flowers, or vegetatively, without the need for pollination.

Why is adaptation important for living organisms?

Adaptation helps organisms survive in their environment by allowing them to adjust their behavior or characteristics, such as a chameleon changing color to blend with its surroundings.