MODULE 2: Organisation of living things Flashcards

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1
Q

What is a Unicellular organism

A

made up of only one cell that carries out all of the functions needed by the organism

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2
Q

What is a Multicellular organism

A

use many different cells to function.
E.g: human beings, plants, animals, birds, and insects

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3
Q

What is a Colonial organism

A

A colony of single-cell organisms is known as colonial organisms
E.g: Colonial organisms can be unicellular

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4
Q

Structure/Function of a Tissue

A

Groups of cells with similar functions.
They perform functions as a group of cell

Eg. Muscle Tissue

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5
Q

Structure/Function of a Systems

A

Groups of organs that function together as a coordinated system to perform a role for the body.

Eg. Digestive system

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6
Q

Structure/Function of a Organs

A

Made up of groups of tissues that function as a whole

Eg. The stomach

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7
Q

Explain Autotrophs

A

(PLANTS) create make their own food through photosynthesis

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8
Q

Explain Heterotrophs

A

(ANIMALS)use cellular respiration for energy production

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9
Q

Structure of Leaves

A

Absorb light. Where photosynthesis and gas exchange occurs. Control water levels.

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10
Q

Explain Stem

A

Provides support and keeps the leaves in light. Also a pathway for the transport of nutrients and gases

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11
Q

Explain Roots

A

Anchors the plant body to the ground. Absorb water and inorganic materials via osmosis and diffusion. Store food and nutrients.

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12
Q

Explain Stomata

A

Allow intake of CO2 and prevent water loss. When the guard cell is full of water they open and intake gas. When water is lost they close

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13
Q

Steps of Photosynthesis

A
  1. Water is absorbed into the roots
  2. Transported along the xylem
  3. CO2 enters through the stomata then travels through mesophyll to the palisade tissue
  4. Water by osmosis and CO2 by diffusion enters to the palisade and then the chloroplasts
  5. Chlorophyll absorbs light into the chloroplasts
  6. Products are converted into glucose.
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14
Q

what does Xylem do

A

Transport sugars
Up or down (source and sink)
Thinned wall, contained sieve plates and companion cells
Outer side of vascular bundle

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15
Q

what does Phloem do

A

Transport water and minerals
Up only
Thick lignin walls. Continuous
Centre of vascular bundle

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