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Ninth Grade (Grade 9) Botany Questions

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Grade 9 Botany
The size of stomata are changed by the
  1. epidermis.
  2. waxy layer.
  3. guard cells.
  4. palisade cells.
Grade 9 Botany
What characteristic does NOT describe gymnosperms?
  1. They produce seeds that develop on cones.
  2. They produce pollen grains that contain the male gamete.
  3. They have no vascular tissue, and they transport water and nutrients only by diffusion and osmosis.
  4. They have xylem and phloem tissues to transport water and nutrients.
Grade 9 Botany
What is true of a monocot?
  1. Its leaves have parallel veins.
  2. It has netted veins.
  3. It consists of vascular bundles found in a ring.
  4. It has a taproot.
Grade 9 Botany
What are root-like structures that anchor moss plants?
  1. hornworts
  2. liverworts
  3. mosses
  4. rhizoids
Grade 9 Botany
What chemical plays a crucial role in a plant's cell division?
  1. auxins
  2. cytokinins
  3. ethylene
  4. abscisic acid
Grade 9 Botany
What is the protective outer layer of a leaf?
  1. veins
  2. dermis
  3. guard cell
  4. epidermis
Grade 9 Botany
What surrounds the plant embryo of a seed?
  1. chlorophyll
  2. cones
  3. spores
  4. stored food
Grade 9 Botany
The outer covering of a plant consists of
  1. dermal tissue.
  2. ground tissue.
  3. vascular tissue.
  4. meristematic tissue.
Grade 9 Botany
When a plant grows from a seed into a tree, from where does the plant gain most of its mass?
  1. food
  2. nutrients from soil
  3. carbon dioxide
  4. sunlight
Grade 9 Botany
Gametes are contained in the
  1. ovary and anthers.
  2. pollen grains and ovules.
  3. ovary, anthers, and style.
  4. filaments, anthers, and pistils.
Grade 9 Botany
What is NOT a characteristic of all plants?
  1. They are multicellular.
  2. They contain vascular structures to transport materials.
  3. They are eukaryotic.
  4. They are autotrophs that produce their own food through photosynthesis.
Grade 9 Botany
In angiosperms, xylem consists of tracheids and
  1. sieve tube elements.
  2. companion cells.
  3. vessel elements.
  4. parenchyma.
Grade 9 Botany
What is the botanical name of orange?
  1. Citrus sinensis
  2. Sinensis oryza
  3. Citrus sativa
  4. Canis domestica
Grade 9 Botany
Which raw material is not needed for plant growth?
  1. water
  2. oxygen
  3. vitamins
  4. carbon dioxide
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