Earthworm

Question 1

What is the scientific name of the common earthworm?

Answer 1

Pheretima posthuma

Question 2

Which system is responsible for the digestion of food in earthworms?

Answer 2

Digestive system

Question 3

True or False: Earthworms have a complete digestive system.

Answer 3

True

Question 4

Fill in the blank: The earthworm’s digestive tract starts from the __________.

Answer 4

mouth

Question 5

What structure in the earthworm stores food temporarily?

Answer 5

Crop

Question 6

What is the function of the gizzard in an earthworm?

Answer 6

To grind food

Question 7

Which part of the digestive system absorbs nutrients in earthworms?

Answer 7

Intestine

Question 8

True or False: Earthworms have teeth.

Answer 8

False

Question 9

What is the primary function of the nervous system in earthworms?

Answer 9

To coordinate body functions and responses

Question 10

Which structure acts as the brain in earthworms?

Answer 10

Cerebral ganglia( supra pharyngeal)

Question 11

Fill in the blank: Earthworms possess a __________ nervous system.

Answer 11

ventral

Question 12

What is the role of the ventral nerve cord in earthworms?

Answer 12

To transmit nerve impulses along the body

Question 13

True or False: Earthworms have sensory organs for light detection.

Answer 13

True

Question 14

What type of reproduction do earthworms primarily use?

Answer 14

Sexual reproduction

Question 15

Fill in the blank: Earthworms are __________, meaning they have both male and female reproductive organs.

Answer 15

hermaphrodites

Question 16

What is the name of the reproductive structure that produces a cocoon in earthworms?

Answer 16

Clitellum

Question 17

What is the primary excretory organ in earthworms?

Answer 17

Nephridia

Question 18

True or False: Earthworms excrete waste through their skin.

Answer 18

True

Question 19

What is the function of nephridia in earthworms?

Answer 19

To filter and excrete waste

Question 20

Fill in the blank: The earthworm’s skin is important for __________.

Answer 20

gas exchange

Question 21

What is the main component of the earthworm’s body morphology?

Answer 21

Segmented body

Question 22

How many segments does a typical earthworm have?

Answer 22

Over 100 segments

Question 23

What is the purpose of the setae in earthworms?

Answer 23

To aid in locomotion

Question 24

Fill in the blank: The earthworm’s body is divided into __________ regions.

Answer 24

anterior, posterior, and clitellar

Question 25

True or False: Earthworms have a rigid skeleton.

Answer 25

False

Question 26

What type of circulatory system do earthworms possess?

Answer 26

Closed circulatory system

Question 27

What role do blood vessels play in the earthworm's circulatory system?

Answer 27

They transport nutrients and oxygen

Question 28

Fill in the blank: Earthworm blood contains __________ for transporting oxygen.

Answer 28

hemoglobin

Question 29

What is the primary function of the earthworm's dorsal blood vessel?

Answer 29

To pump blood forward

Question 30

How do earthworms contribute to soil health?

Answer 30

By aerating and enriching the soil

Question 31

True or False: Earthworms can regenerate lost segments.

Answer 31

True

Question 32

What is the significance of the earthworm's moist skin?

Answer 32

It facilitates gas exchange

Question 33

Fill in the blank: The __________ is the outermost layer of an earthworm's body.

Answer 33

cuticle

Question 34

What type of muscle layers do earthworms have?

Answer 34

Circular and longitudinal muscles

Question 35

True or False: Earthworms have a well-developed respiratory system.

Answer 35

False

Question 36

What is the role of the earthworm's pharynx?

Answer 36

To help ingest food

Question 37

Fill in the blank: The __________ helps to propel food through the digestive tract.

Answer 37

muscular contractions

Question 38

What is the primary function of the earthworm's anus?

Answer 38

To expel waste

Question 39

True or False: Earthworms can survive in both aerobic and anaerobic conditions.

Answer 39

False

Question 40

What is the term for the earthworm's ability to sense its environment?

Answer 40

Sensory perception

Question 41

Fill in the blank: Earthworms have __________ that detect vibrations and chemicals.

Answer 41

sensory cells

Question 42

What is the role of the earthworm's seminal receptacles?

Answer 42

To store sperm received from another earthworm

Question 43

True or False: Earthworms can reproduce asexually.

Answer 43

False

Question 44

What is the significance of the earthworm's coelom?

Answer 44

It acts as a hydrostatic skeleton and a space for organ development

Question 45

Fill in the blank: Earthworms undergo __________ during reproduction.

Answer 45

cross-fertilization

Question 46

What is the process by which earthworms move through the soil?

Answer 46

Peristalsis

Question 47

True or False: The earthworm's body is covered by a tough exoskeleton.

Answer 47

False

Question 48

What is the function of the earthworm's chloragogen tissue?

Answer 48

To store glycogen and produce urea

Question 49

Fill in the blank: The __________ is the segment of the earthworm where the clitellum is located.

Answer 49

reproductive segment