"Plants and Environment" Biology and Environment PPT Courseware 2

"Plants and Environment" Biology and Environment PPT Courseware 2

Learning objectives of this lesson

1. Take cactus and monstera as examples to understand the characteristics of drought-tolerant and shade-loving plants.

2. Understand the characteristics of deserts, mountains, grasslands, tropical rainforests, and pond plants, and be able to distinguish them.

3. Know the function of greenhouse.

Why are there such big differences in the external forms of the two plants, Monstera deliciosa and Cactus?

Answer: The reason why Monstera deliciosa leaves are large and green is because it absorbs a large amount of water from the soil. Most of the absorbed water is consumed in transpiration. The leaves are the main transpiration parts, and most of the water has to escape from here, so it grows so. The cactus has grown in deserts with little rain for a long time. In order to adapt to the harsh drought environment, after thousands of years of evolution, the leaves have degenerated and become needle-like or thorn-like. The body shape has changed to the maximum extent. Reduce water transpiration.

Environment Plants and their morphological characteristics

Desert has a strange appearance of few plants, degenerated leaves, deep roots and lack of leaves.

Alpine plants are short in size, have hairy stems and leaves, and are needle-like cushion plants.

Grassland is a zonal vegetation type with clusters of grasses.

Tropical rainforest. Tall evergreen forest vegetation with multi-layered structure and dense leaves.

pond aquatic plant with soft and transparent leaves with aerenchyma

greenhouse definition

Greenhouse is also called greenhouse in English. A facility that can transmit light, retain heat (or heat), and is used to cultivate plants. In seasons that are not suitable for plant growth, it can provide a growth period and increase yields. It is mostly used for the cultivation or seedling cultivation of warm-loving vegetables, flowers, forest trees and other plants in low-temperature seasons.

According to the growing season of the plant, it can provide a growth period and increase the yield. It is mostly used for the cultivation or seedling cultivation of warm-loving vegetables, flowers, forest trees and other plants in the low-temperature season. There are many types of greenhouses, which can be divided into many types according to different roof truss materials, lighting materials, shapes and heating conditions, such as glass greenhouses, plastic polycarbonate greenhouses; single-span greenhouses, multi-span greenhouses; single-roof greenhouses, double-roof greenhouses, etc. Roof greenhouse; heated greenhouse, unheated greenhouse, etc. The greenhouse structure should be sealed and insulated, but should be easily ventilated and cooled. Modern greenhouses are equipped with equipment to control temperature, humidity, light and other conditions. Computers are used to automatically control and create the best environmental conditions for plants.

Keywords: Biology and environment teaching courseware, Plants and environment teaching courseware, People's Education Edition sixth grade science PPT courseware download, second volume, sixth grade science slide courseware download, Biology and environment PPT courseware download, Plants and environment PPT courseware download,. PPT format;

For more information about the "Biology and Environment Plants and Environment" PPT courseware, please click the "Biology and Environment ppt Plants and Environment ppt" tag.

"Plants and Environment" Biology and Environment PPT courseware:

"Plants and Environment" Biology and Environment PPT Courseware Why are there such big differences in the external forms of the two plants, Monstera deliciosa and Cactus? (What does it have to do with their growing environment?) Answer: 1. Shade plant areas have sufficient rainfall and absorb a large amount of water from the soil..