Biology set 3
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
What are the two main parts of a plant?
Shoot system and root system are the two main parts of the plant
What are the three main parts of the shoot system?
Leaves, stems and reproductive structures are the main parts of the shoot system
What is the root system made up of?
Roots only
What is the role/job of leaves?
provide a place for photosynthesis, absorb/move water (transpiration)
What are the two parts of a leaf?
The lamina, the petiole
What is the lamina?
The lamina is the leaf blade
What is the petiole?
The petiole is the leaf stalk
Do all leaves have a lamina and petiole?
No, but most do have these two parts
Why do some leaves have unusual shapes and sizes?
Leaves with unusual shapes/sizes have specialized functions
Why might leaves have a small size or waxy coating?
The waxy coating or small size stops water loss
What are the red ‘flowers’ on a Poinsettia plant in winter?
The red ‘flowers’ are actually specialized leaves called bracts (the flowers are the little yellow centres)
What is the purpose of the bracts?
The purpose of the red bracts is to attract insects to pollinate the plant
What does pollen contain?
Pollen contains the sperm of a plant
What are pollinators?
Pollinators are insects or birds that will transport the pollen from one plant to another
what is the stem of a plant?
The stem of a plant is the core of the shoot system
What are the two parts of a stem?
The stem is divided into the nodes and internodes.
What are nodes?
Nodes are where buds grown into leaves or other stems or flowers
What are internodes?
Internodes are the parts between nodes.
Most stems are above ground, unless the plant is what kind of plant?
Plants called tubers, such as potatoes, have stems under the ground
What is the role of the stem?
The role of the stem is to provide support for the plant, place for leaves and fruit/flowers to grow, keeps leaves facing the sunlight, transports nutrients and water, stores nutrients.
How might humans use a plant’s stem?
Stems might have sugar (sugar cane) or maple syrup (sap)
What is the stem of a tree?
tree stems are called trunks
What else do we get from tree stems or bark?
we get wood, paper from the stem, cinnamon, cork come from bark
Where do you find roots?
Roots are usually, but not always, below ground