"How Animals and Plants Spend the Winter" Changes in the Four Seasons PPT Courseware 3

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"How Animals and Plants Spend the Winter" Changes in the Four Seasons PPT Courseware 3

Thinking: The seasons change, autumn passes and winter comes. Winter is the coldest time of the year, so what can we humans do to resist the cold?

Plants and animals also have their own ways to survive the winter. Please look at the pictures and think about the methods that plants use to survive the winter.

Pine tree: The pine tree represents the evergreen tree that adopts the method of "wearing armor and wearing a helmet" to resist the severe cold in the snow. They secrete a layer of wax on the surface of their bark and leaves. Their leaves are small in area and their stomata are deeply indented. They can keep out the cold and prevent their own water from evaporating, which is beneficial to ensuring the supply of nutrients in the cold winter.

Sycamore tree: The sycamore tree represents some deciduous trees and shrub plants that adopt the method of "sparing the last bit to preserve the capital", throwing away the "baggage" and "encumbrance" in order to survive the winter safely. On the one hand, hibernation is rapidly produced to inhibit growth to prevent excessive consumption of nutrients. On the other hand, abscission cells are produced in the lower tissue of the petiole, causing the leaves to fall off quickly to reduce the consumption of nutrients.

Triproot grass: Triproot grass is in a dormant state in winter. They store sufficient nutrients in their stems or underground parts. In winter, the exposed parts on the ground have died, but the underground parts have not died and can withstand severe cold. Relying on stored nutrients to sustain life, they sprout and grow the next spring.

How plants survive the winter

Most trees use fallen leaves to reduce water loss, and trees produce antifreeze substances in their bodies.

Due to their unique structures, pine trees and camphor trees basically remain unchanged in appearance, but they also produce antifreeze substances in their bodies.

Herbs use roots and seeds to survive the winter.

Wild geese: Wild geese are migratory birds. They fly all the way south to spend the winter. This is called migration for the winter.

Migrating for the winter: such as geese, swallows, orioles, etc.

Frog: In winter, frogs will spend the entire winter hiding in holes without eating or drinking. This is called hibernation.

Hibernate over the winter: such as frogs, snakes, turtles, etc.

Sparrow: Sparrows in winter are chubby and covered with down. The fluffy down is prepared for winter.

Thickened fluff: such as sparrows, crows, etc.

other:

Store food for winter: such as squirrels, bees, ants, etc.

Lay eggs for the winter: such as praying mantises, locusts, etc.

Hide in a safe place to spend the winter: such as flies, mosquitoes, etc.

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For more information about the PPT courseware "Changes in Four Seasons: How Animals and Plants Overwinter", please click on the ppt tag of "Changes in Four Seasons: How Animals and Plants Overwinter".

"How Animals and Plants Spend the Winter" Changes in the Four Seasons PPT Courseware 2:

"How Animals and Plants Spend the Winter" Changes in the Four Seasons PPT Courseware 2 Do animals and plants also undergo some changes in winter? What has changed? Observe How are they different in winter than in other seasons? Pine trees, sycamores, triproot grass, foxtail grass, do you also know about plants...

"How Animals and Plants Spend the Winter" PPT courseware on changes in the four seasons:

"How Animals and Plants Spend the Winter" PPT courseware on changes in the four seasons. Carefully observe several plants and understand how they are different in winter from other seasons. What have you discovered? There is oil on the surface of the leaves of the pine tree. There is oil on the surface of the leaves of the orange tree. The leaves of the sycamore tree die and fall off..

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Update Time: 2024-11-22

This template belongs to science courseware E-education edition sixth grade science volume 1 industry PPT template

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