7th science ch 8
What is a Gall?
The immune system of the tree that catches diseases or parasites or bugs that try to make their way into the tree from the branches, the tree forms a knot around the intrusion keeping the tree from outsiders
What are the two main groups of seed plants?
Angiosperms-covered fruity seeds, and Gymnosperms-uncovered seeds
What are the two types of stems and why are they different?
Branches are offshoots from the main stem the trunk ; Branches have nodes that hold leaves and trunks are the main highways for nutrient transportation
How is photosynthesis indirectly responsible for helping a plant stand upright?
Carbohydrates serve as the building blocks for the plants infrastructure (carbs are the on of the byproducts of photosynthesis)
What are the names of plants that lose their leaves and keep their leaves all year?
Deciduous - loses leaves; Evergreen - Keeps all year
What are the different kinds of leaves called?
Lobed, simple, needled and scaled
What are the 3 primary groups of plants?
Non-vascular , Vascular , Seed-bearing vascular
What is photosynthesis?
Photosynthesis is the process by which sunlight, carbon dioxide and water are mixed together within the leaves of a plant to create oxygen and carbohydrates
What are the 4 main parts of a plant? And what are the functions of each?
Roots- anchor of plant, gather minerals and water; Trunk - skeleton and highway of plant ; Seeds-reproductive means of plant; Leaves - sites of energy production
What is the covering of the leaf that prevents H20 from escaping?
Waxy Cuticle
Why do trees lose their branches?
When a branch doesn't produce energy from photosynthesis, the branch is not given any nutrients to stay alive from the rest of the plant
