Plants and Organs

What is an organ?

• Specialised cells grouped together with the same function

• A group of tissues with the same function

• The building blocks of all living things

• Made from a group of different organs, which all work together to do a particular job

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The function of the roots is:

• Anchor the plant and absorb sucrose and minerals from the soil

• Absorb water only from the soil

• Absorb minerals and water from the soil and anchor the plant

• Absorb nutrients and water from the soil

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What are palisade cells specialised for?

• Respiration

• Transpiration

• Fertilisation

• Photosynthesis

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Where does photosynthesis happen in a plant cell?

• Chloroplast

• Vacuole

• Ribosome

• Cytoplasm

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Which of these is not an example of a plant tissue?

• Glandular tissue

• Mysophyll tissue

• Xylem tissue

• Epidermal tissue

Which of these are functions of spongy mesophyll. Choose all the correct answers.

• Allows gases to circulate freely:

• Allows CO₂ to pass to palisade cells for photosynthesis

• Allows O₂ produced to pass out of leaf into air

• Covering layer of plant organs

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Which of these is a structural adaptation of the upper epidermis?

• Long, vertically arranged cells

• Transparent, no chloroplasts

• Tightly packed

• Rounded shape

Palisade mesophyll is...

• Long, vertically arranged cells which are tightly packed

• Full of chloroplasts

• 1-5 cells thick

• Full of air spaces

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The leaf has a shiny, waxy cuticle around it to

• increase the rate of photosynthesis
• attract more light
• control water loss
• stop carbon dioxide and oxygen gases escaping

Most of the chloroplast cells are found in the

• upper epidermis
• pallisade mesophyll layer
• lower epidermis
• stomata