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9th grade · Science · Unit 5 of 14

Systems in Animals & Plants

How body systems work together, and how plant systems transport, reproduce and respond.

What your child practices

Practices how animal systems interact for regulation (nervous and endocrine), nutrient absorption (digestive and circulatory), reproduction and defense (immune and skin), and how plant structures carry out transport (xylem and phloem), reproduction (flowers, pollination) and response (tropisms).

Alabama Course of Study content standard: BIO.4 · how body systems work together to keep homeostasis

How we explain it

Children can open this short lesson before they practice.

  1. The nervous and endocrine systems regulate the body. Insulin from the pancreas lowers blood sugar.
  2. Digestive and circulatory systems absorb and carry nutrients. Kidneys balance water and salts.
  3. Skin and the immune system (white blood cells, antibodies) defend the body. Plant xylem and phloem transport materials.

Example: White blood cells and antibodies are part of which system? They fight germs. Defense against germs is the immune system’s job. Answer: the immune system

Systems in Animals & Plants in Alabama

In the Alabama Course of Study, this is unit 5 of 14 in 9th grade Science, after Cells from Cells and before Photosynthesis & Respiration.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Alabama State Department of Education (ALSDE)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Stomata on leaves let…

    • pollen form
    • gases in and out and water vapor escape
    • sugar move down
    • roots absorb water

  2. Question 2

    When you get cold, you shiver. This response involves the nervous and…

    • reproductive systems
    • excretory systems
    • muscular systems
    • digestive systems

  3. Question 3

    Hormones from the reproductive system are part of which other system?

    • Endocrine
    • Respiratory
    • Skeletal
    • Integumentary

  4. Question 4

    Nutrients absorbed in the small intestine are carried to cells by the…

    • skeletal system
    • integumentary system
    • circulatory system
    • nervous system

  5. Question 5

    After fertilization, a flower's ovary develops into a…

    • stem
    • fruit
    • root
    • leaf

  6. Question 6

    Which plant structures work together to move sugar made in leaves to growing fruit?

    • Anthers and stigma
    • Stomata and pollen
    • Roots and xylem only
    • Leaves and phloem

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