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PLANTS

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Review and learn contents related to plants.

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À propos de Présentation
biología
plants
 Âge recommandé: 10 ans
62 fois fait

Créé par

Laura Currás
Laura Currás
Spain

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PLANTSVersion en ligne

Review and learn contents related to plants.

par Laura Currás
1

PLANTS

Characteristics of plants

Plant nutrition

Sexual reproduction in plants

Asexual reproduction in plants

How do plants respond to their environment?

 


2

CHARACTERISTICS OF PLANTS

3

CHARACTERISTICS OF PLANTS

4

CHARACTERISTICS OF PLANTS

CLASSIFICATION OF PLANTS

Flowering (angiosperms and gymnosperms):


They have organs like flowers, fruits and seeds that help them to reproduce.

Non-flowering (ferns and mosses):


They do not have seeds. They reproduce through spores.

Spores: tiny cells that germinate and grow into a new plant.
5

CHARACTERISTICS OF PLANTS

6

CHARACTERISTICS OF PLANTS MIND MAP

7

PLANT NUTRITION

PLANT NUTRITION

HOW DO PLANTS GROW?

  • PHOTOSYNTHESIS
  • RESPIRATION

HOW DO PLANTS MAKE NUTRIENTS?

8

PHOTOSYNTHESIS

9

RESPIRATION

RESPIRATION

  • Absorb: oxygen (O2)
  • Release: carbon dioxide (CO2)

PROCESS

It takes place during 24 h, all day long.

Plants absorb oxygen (O2) from the air. They use nutrients and produce energy.

Finally, plants release carbon dioxide (CO2).




10

PHOTOSYNTHESIS AND RESPIRATION

11

HOW DO PLANTS MAKE NUTRIENTS?

HO DO PLANTS MAKE NUTRIENTS?

  1. Plants absorb RAW SAP (water and minerals) through their roots.
  2. Xylem vessels are tubes that carry the RAW SAP from the roots to the leaves.
  3. Leaves absorb carbon dioxide through pores called stomas.
  4. Photosynthesis takes place inside the leaves. Sunlight transforms RAW SAP and carbon dioxide (CO2) into nutrients.
  5. The nutrients formed inside the leaves are called ELABORATED SAP. ELABORATED SAP= RAW SAP+ Carbon dioxide.
  6. Phloem vessels are small tubes that transport elaborated sap all over the plant.
12

PLANT NUTRITION MIND MAP

13

SEXUAL REPRODUCTION IN PLANTS

MALE ORGANS: STAMEN

ANTHER: It produces and hold pollen.

FILAMENT: It gives support to the anther.

FEMALE ORGANS: PISTIL

STIGMA: It has a sticky top to trap pollen.

STYLE: It is a tube that connects the stigma and the ovary.

OVARY: It is the central part of the pistil and contains the ovules.

OVULES: Once an ovule is fertilised it becomes a seed.


14

SEXUAL REPRODUCTION IN PLANTS

TYPES OF FLOWERS

MALE FLOWER

It produces pollen.

FEMALE FLOWER

It produces ovules.

HERMAPHRODITE FLOWER

The male and the female parts are inside the same flower.

15

SEXUAL REPRODUCTION IN PLANTS

POLLINATION

It occurs when fertilisation occurs. The pollen reaches the pistil and travels down it, where it fertilises the ovule.

  • The ovary becomes a fruit.
  • The ovule becomes a seed.

When seeds fall to the ground and germinate, a new plant grows.

TYPES OF POLLINATION

SELF POLLINATION

Pollen is transferred from the stamen of a flower to the pistil of another flower of the SAME PLANT.

CROSS POLLINATION

Pollen is transferred from the stamen of one flower to the pistil of one flower of ANOTHER PLANT of the same type.

16

SEXUAL REPRODUCTION IN NON FLOWERING PLANTS

REPRODUCTION IN NON FLOWERING PLANTS

  1. SORI are sacks that contain thousands of spores.
  2. Spores fall to the ground and form organs that produce REPRODUCTIVE CELLS.
  3. After FERTILISATION a new fern begins to grow.
17

SEXUAL REPRODUCTION IN PLANTS MIND MAP

18

ASEXUAL REPRODUCTION IN PLANTS

FRAGMENTATION

A new plant grows from a fragment of the parent plant.

  1. A small fragment breaks off the plant.
  2. The fragment falls to the ground and germinates.
  3. A new plant begins to grow.

TYPES

  • STOLONS
  • CUTTINGS
  • TUBERS
  • BULBS
  • RHIZOMES
19

STOLONS

STOLONS

Above-ground stems that grow horizontally. As they grow, they develop roots that produce a new plant. Example: STRAWBERRIES.

20

CUTTINGS

CUTTINGS

They are stems that produce new roots when they are separated from the parent plant. Example: GERANIUMS.

21

TUBERS

TUBERS

Underground stems that store many nutrients that they get from the soil. Example: POTATOES.

22

BULBS

BULBS

They are at the bottom of the stem. They grow underground amd store nutrients for the plant. When planted in the ground, each bulb gives rose to a new plant. Examples: GARLIC AND ONIONS.

23

RHIZOMES

RHIZOME

They are undergound stems that grow horizontally. New plants grow from these stems. Example: ASPARAGUS.

24

ASEXUAL REPRODUCTION IN PLANTS MIND MAP

25

HOW DO PLANTS MAKE RESPOND TO THEIR ENVIRONMENT? MIND MAP

 
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