Which of the following is lacking in invertebrates?(1 point)

Responses

digestive system
digestive system

eyes
eyes

muscular system
muscular system

a spinal column
a spinal column

11 answers

Invertebrates lack a spinal column. Therefore, the correct response is:

a spinal column

Think about the differences between chemical and mechanical digestion. Which organs in the digestive system are involved only in the chemical digestion of food? Select the two correct answers.(1 point)
Responses

small intestine
small intestine

liver
liver

stomach
stomach

pancreas
pancreas

esophagus
esophagus

mouth
mouth

large intestine

The organs involved only in the chemical digestion of food are:

  1. liver
  2. pancreas

These organs contribute to the chemical digestion processes through the production of bile (liver) and digestive enzymes (pancreas).

Which body system functions to receive a stimulus, processes it, and produces an appropriate response?(1 point)
Responses

circulatory
circulatory

digestive
digestive

respiratory
respiratory

nervous

The body system that functions to receive a stimulus, processes it, and produces an appropriate response is the nervous system.

Which of these human development stages occurs last?(1 point)
Responses

fetus
fetus

blastocyte
blastocyte

embryo
embryo

zygote

The human development stage that occurs last among the options provided is fetus.

Which event occurs in the uterus?(1 point)
Responses

a fetus develops
a fetus develops

fertilization occurs
fertilization occurs

sperm is produced
sperm is produced

estrogen is produced

The event that occurs in the uterus is a fetus develops.

Which lobe of the brain is most helpful when looking through a prism?(1 point)
Responses

temporal
temporal

frontal
frontal

occipital
occipital

parietal

The lobe of the brain that is most helpful when looking through a prism is the occipital lobe. The occipital lobe is primarily responsible for processing visual information.