Chapter 2 (2.4)

Question 1

Levels of Organisation (5)

Answer 1

1) Cell
2) Tissue
3) Organ
4) System
5) Organism

Question 2

Main organ systems in the human body (11)

Answer 2

• endocrine system
• respiratory system
• muscular system
• reproductive system ( male & female)
• lymphatic system
• nervous system
• blood circulatory system
• digestive system
• urinary system
• skeletal system
• integumentary system

Question 3

Endocrine system structure (1) & main function (1)

Answer 3

• endocrine gland that secrets hormones

- coordinates body activities with the nervous system

Question 4

Respiratory system structure (4) & main function (1)

Answer 4

• trachea
• nose
• lungs
• diaphragm
• exchange of O2 & CO2 gases between body & external environment

Question 5

Muscular system structure (3) & main function (1)

Answer 5

• skeletal muscles
• smooth muscles
• cardiac muscles
• contracts & relaxes to produce movements in different parts of the body

Question 6

Male reproductive system structure (3) & main function (1)

Answer 6

• testes
• prostate glands
• penis
• produce sperm & male sex hormones

Question 7

Female reproductive system structure (5) & main function (1)

Answer 7

• ovary
• uterus
• fallopian tube
• vagina
• cervix
• produce ovum & female sex hormones

Question 8

Lymphatic system structure (3) & main function (2)

Answer 8

• spleen
• lymph nodes
• lymph vessels
• maintains bodily fluids
• prevents infectious diseases

Question 9

Nervous system structure (3) & main function (2)

Answer 9

• brain
• spinal cord
• peripheral nerves
• detects & sends information in the body
• coordinates body activities

Question 10

Blood circulatory system structure (4) & main function (1)

Answer 10

• heart
• artery
• vein
• blood capillary
• transports nutrients, respiratory gases & waste products

Question 11

Digestive system structure (7) & main function (1)

Answer 11

• mouth
• oesophagus
• stomach
• liver
• pancreas
• small intestine
• large intestine
• digests food into a simple form for easy absorption

Question 12

Urinary system structure (4) & main function (1)

Answer 12

• kidney
• ureter
• urethra
• bladder
• eliminates waste products ( urea, uric acid) from body

Question 13

Skeletal system structure (4) & main function (3)

Answer 13

• bone
• cartilage
• ligament
• tendon
• supports the body
• protects the internal organs
• provides a base for muscle adhesion

Question 14

Integumentary system structure (1) & main function (1)

Answer 14

• skin

- protects the body from physical injury, infection & dehydration

Question 15

Main systems in plants (2)

Answer 15

• shoot system

- root system

Question 16

Shoot system structure (5) & functions (2)

Answer 16

• stems
• leaves
• shoots
• flowers
• fruits
• stem & twigs: supports leaf at vertical position for max sunlight absorption during photosynthesis
• flowers: pollination process

Question 17

Root system structure (1) & functions (2)

Answer 17

• all roots in a plant
• absorb water & mineral salts
• provide support for plants