Biology 9 Lesson 43: Effects of temperature and humidity on biological life
1. Theoretical Summary
1.1. Effect of temperature on living things
The temperature of the environment affects the morphology and physiological activities of organisms.
– Organisms are divided into endothermic and endothermic.
Most organisms live in a temperature range of 0 – 50 .oC.
+ Plants in hot areas often have green leaves all year round, while animals have a smaller body size and darker body color.
+ Plants in cold areas change leaf color when temperature changes, while animals have thicker and longer fur, larger body size.
1.2. Effect of humidity on living organisms
– Plants and animals have different characteristics to adapt to environmental conditions with different humidity.
+ Based on the degree of adaptation of organisms to moisture, plants are divided into 2 groups: moisture-loving plants and drought-tolerant plants, while animals are divided into 2 groups: moisture-loving animals and drought-loving animals.
2. Illustrated exercise
Lesson 1: Compare the different characteristics between two groups of moisture-loving and drought-tolerant plants.
The difference between moisture-loving and drought-tolerant plants:
Plants like moisture: live in wet places, lack of light, the leaf blade is thin, the leaf plate is wide, the green color of the stomata has 2 leaves. The hedge tissue is underdeveloped, the tree with few branches has the phenomenon of natural pruning.
Drought-tolerant plants: live in places with a lack of water, the body is succulent, pepper leaves are reduced or turned into spines, may have thick, narrow blades, and developed veins. Physiological activities are weak because the stomata are often closed during the day to limit transpiration and use water sparingly.
Lesson 2: Of the two groups of organisms that are endothermic and thermogenic, which group has the highest tolerance to temperature changes in the environment? Why?
Of the two groups of endothermic and thermophilic organisms, the endothermic group has a high tolerance to environmental temperature changes because the endothermic organisms have developed a mechanism to regulate body temperature to keep the body temperature. stable regardless of the external environment.
3.1. Essay exercises
Question 1: How does the temperature of the environment affect the morphological and physiological characteristics of organisms?
Verse 2: Describe the effects of temperature, light, and humidity on living organisms?
Question 3: Name 10 animals that belong to two groups of animals that are moisture-loving and dry-loving.
Question 4: At a temperature of 30°C, how do tilapia in Vietnam grow, develop and reproduce?
3.2. Multiple choice exercises
Question 1: Among vertebrates, which class of animals belongs to the group of endothermic animals?
A. Class of Fish, class of Amphibian.
B. Reptile Class
C. Bird class, Animal class.
D. Both A and B
Verse 2: Which group of organisms has a high tolerance to environmental temperature changes?
A. Group of thermogenic organisms.
B. The group of thermophilic organisms.
C. There is no group at all.
D. Both constant and variable groups.
Question 3: Based on the ability to live in different humidity environments, animals are divided into how many groups? Those are the groups?
A. A group – Group of animals that love moisture.
B. A group – A group of dry-loving animals.
C. Two groups – Group of animals that love moisture and group of animals that love to dry.
D. Three groups: A, B and intermediate group.
Question 4: Frogs are animals that live in
A. dry place.
B. the desert.
C. humid place.
D. all over the place.
Question 5: Which of the following groups of animals includes all ectothermic animals?
A. Carp, lizard, tiger, chicken.
B. Tilapia, water snakes, crocodiles, snails.
C. Leopard, bear, pigeon, eagle.
D. Lion, deer, deer, buffalo.
After completing this lesson, students should know the following:
- State in which cases a converging lens produces real and virtual images of an object and shows the characteristics of these images.
- Using special light rays to construct real and virtual images of an object through a converging lens.
- Group cooperation in learning. stimulate the spirit of love of science