S1 - Photosynthesis and Biodiversity (complete) Flashcards

This deck covers the Photosynthesis and Biodiversity topic covered in S1 Science. Photosynthesis and Biodiversity is a Biology topic. (38 cards)

1
Q

Organism

A

A living thing.

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2
Q

The process used by green plants to make food.

A

Photosynthesis

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3
Q

Which two substances are required for photosynthesis?

A

Carbon dioxide and water

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4
Q

Which two substances are made during photosynthesis?

A

Glucose and oxygen

(glucose/carbohydrates/sugars all OK)

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5
Q

The green pigment inside chloroplasts that captures light.

A

Chlorophyll

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6
Q

Chloroplast

A

Tiny structure inside plant cells where photosynthesis happens.

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7
Q

Release of energy from sugars that happens in cells.

A

Respiration

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8
Q

Glucose

A

A type of sugar (made in photosynthesis).

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9
Q

A chain of glucose molecules used as an energy store.

A

Starch

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10
Q

Group of molecules including sugar and starch.

A

Carbohydrates

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11
Q

A chain of glucose molecules used to build cell walls.

A

Cellulose

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12
Q

Word equation for photosynthesis

A

Carbon dioxide + Water → Glucose + Oxygen

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13
Q

Yellow/brown chemical used to test for starch

A

Iodine

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14
Q

Ethanol

A

Alcohol - used to remove the green colour from a leaf.

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15
Q

Describe the chemical test for starch

A

Iodine tuns from brown to blue/black (if starch is present)

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16
Q

Steps to test if starch is present in a leaf:

  1. Boil leaf in ethanol
  2. Add iodine - if it turns blue/black, starch is present
A

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
  3. Add iodine - if it turns blue/black, starch is present
17
Q

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Add iodine - if it turns blue/black, starch is present
A

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
  3. Add iodine - if it turns blue/black, starch is present
18
Q

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
A

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
  3. Add iodine - if it turns blue/black, starch is present
19
Q

A comparison experiment used to see if something is having an effect.

A

Control experiment

20
Q

Producers

A

Plants (which trap energy using photosynthesis and use it to make molecules).

21
Q

Consumers

A

Animals which eat plants (or other animals).

22
Q

Food chains show how ______ is passed from plants to animals when the plants are eaten.

A

Food chains show how energy is passed from plants to animals when the plants are eaten.

23
Q

What can plants be used for? Suggest two uses.

A

Any of:

food/drink (e.g. potatoes)

fibres (e.g. cotton for clothing)

medicines (e.g. morphine from poppies)

building materials (e.g. bamboo)

fuels (e.g. sugarcane to make biofuels)

cosmetics and toiletries (e.g. aloe vera in skin care)

24
Q

Species

A

A group of organisms with common characteristics (features).

25
Habitat
The **place** where a species can be found (where it lives).
26
Biodiversity
The **number** of different **species** in an area.
27
Distribution
The **spread** or **range** of organisms - **where they are found**.
28
Ecosystem
The **interaction** between **living things** and their **environment**.
29
Abundance
**How many** there are.
30
Name this piece of equipment
Quadrat
31
What are **quadrats** used for?
**Sampling** (e.g. counting number of flowers in a meadow)
32
Name this piece of equipment
Choice chamber
33
Choice chamber
Used to test which **conditions** are **preferred** by small organisms.
34
Vertebrate
An animal **with** a **backbone**.
35
Invertebrate
An animal **without** a **backbone**. | (e.g. insects)
36
Key
Used to **identify organisms** by their **characteristics**.
37
What **type** of **key** is this?
Paired statement key
38
What **type** of **key** is this?
Branched key