G9 Biology S1M1

The diagram shows the things that leaves absorb, and the things they make, when their cells photosynthesise faster than they respire. Identify A-E.

• A-CO₂

  B-H₂0

  C-C₆H₁₂0₆

  D-Sunlight

  E-O₂

• A-O₂

  B-CO₂

  C-C₆H₁₂0₆

  D-H₂0

  E-Sunlight

• A-H₂0

  B-CO₂

  C-Sunlight

  D-C₆H₁₂0₆

  E-O₂

• A-O₂

  B-Sunlight

  C-O₂

  D-CO₂

  E-H₂0

Photosynthesis is an important biological process. Choose the correct statements about photosynthesis.

• Photosynthesis takes place in the roots.

• photosynthesis is carried out by consumers.

• photosynthesis makes glucose.

• photosynthesis releases energy.

Stephan grew seeds in glass boxes containing different amount of carbon dioxide.

He dried the plants in each box and measured their mass. Then he subtracted the mass of the original seeds to see how much new biomass they made.

What conclusion can you make from Stephan's table?

Plant Biomass produced in (g)

0.00 g (0.00%)

0.09 g (0.04%)

0.18 g (0.08%)

0.21 g (0.12%)

• Increasing carbon dioxide results to increasing biomass

• the increase in biomass has no direct relation to the presence of carbon dioxide

• The amount of oxygen release by the plant is dependent on its biomass

• The data is too simplified and inconclusive.

Mariam wants to know which minerals are important for plant growth. She takes four samples of pure water and adds different minerals to each of them. Then she puts a seedling in each sample of water.

After two weeks she compares the masses of the seedlings.

Which options below Mariam should keep the same for every mineral solution she tested?

• volume of water

• kind of mineral

• mass of seedlings

• amount of sunlight

The diagram shows the main parts of an insect-pollinated flower. What part of the flower is label A?

• anther

• filament

• petal

• sytle

The diagram shows the main parts of a wind-pollinated flower.

How does a wind-pollinated flower carry pollination?

• wind-pollinated flowers rely on wind to carry pollen from flower to flower.

• wind-pollinated flowers rely on insects to ensure pollination

• wind-pollinated flower do not pollinate

• wind-pollinated flower uses rain to wash away pollen to the ground.

Joshua is trying to find the concentration of sugar needed to make pollen grains grow. He makes different sugar solutions. he leaves 10 pollen grains in each solution for 4 hours. Then he observes them under the microscope and records how many of them grow pollen tubes.

What percentage of the pollen grains grew a pollen tube in the 100 g per cubic decimeter sugar solution?

• 0%

• 2%

• 80%

• 100%

These four animals have different adaptations.

Which animal lives in the arctic?

• A

• B

• C

• D

Fox A lives in the Arctic and fox B lives in the desert.

Fox A has brown fur in the summer and white fur in winter. Fox B's ear can detect sounds from distant sources.

What term describes this physical features that allows the animal to survive?

• Evolution

• Adaptation

• Adjustment

• Natural Selection

Polar bears are adapted to life in the Arctic. Camels are adapted to life in the desert. Suggest why both animals have very wide feet.

• Their feet has no bearing to the survival of the animal

• The size of their feet determines their habitat

• The size of their feet allows them to clean it easily.

• The wide feet prevents the camel and polar bear from sinking in the ice or sand.