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Ninth Grade (Grade 9) Botany Questions

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Grade 9 Botany
In plants, most photosynthesis occurs in
  1. the vascular bundles, found in the stems and roots
  2. the epidermis, found in the leaves
  3. the mesophyll, found in the leaves
  4. the pith of the stem
Grade 9 Botany
An abscission layer is involved in
  1. the inhibition in the growth of roots
  2. the loss of leaves from deciduous trees
  3. the development of non-herbaceous stems
  4. all of the above
Grade 9 Botany
Which of the following correctly defines a gymnosperm?
  1. A gametophyte structure that carries the male gamete
  2. A structure that carries the male gamete
  3. A nonvascular plant that produces seeds that are not enclosed in a fruit
  4. A vascular plant that produces seeds that are not enclosed in a fruit
Grade 9 Botany
Which increases when the stomata are open ?
  1. transpiration
  2. respiration
  3. photosynthesis
  4. growth
Grade 9 Botany
Which of the following is true of a monocot?
  1. Its leaves consist of parallel veins
  2. It has netted veins
  3. It consists of vascular bundles found in a ring
  4. It contains a taproot
Grade 9 Botany
Because of their life cycles, all trees can be described as
  1. perennials
  2. biennials
  3. annuals
  4. deciduous
Grade 9 Botany
What is one function of the root hairs?
  1. to hold the plant in place in the soil
  2. to provide an area where roots grow the fastest
  3. to increase the surface area of the root
  4. to prevent the plant from being uprooted in high winds
Grade 9 Botany
What are flowering plants called?
  1. angiosperms
  2. gymnosperms
  3. bryophytes
  4. conifers
Grade 9 Botany
Which of the following is true about plants that lack a vascular tissue?
  1. Water is pulled very few centimeters above the soil in the ground.
  2. They can conduct water long distances.
  3. They generate seeds to reproduce.
  4. They must grow in dry and warm climates.
Grade 9 Botany
Moisture enables moss to
  1. grow in height
  2. produce flowers
  3. reproduce
  4. undergo osmosis
Grade 9 Botany
What do pollen grains contain?
  1. egg cells
  2. sperm cells
  3. zygote
  4. embryo
Grade 9 Botany
Winged fruits called samaras are produced by
  1. maples
  2. magnolias
  3. birches
  4. oaks
Grade 9 Botany
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