External and Internal Stimuli Progress

Roots grow downward in the soil in response to -

• gravity

• sunlight

• water

• wind

When an animal is thirsty, it responds by -

• eating food

• drinking water

• blinking rapidly

• sweating excessively

A crocodile quietly stalks its prey, a wildebeest, drinking at a water hole. The wildebeest suddenly sees the crocodile approaching. The wildebeest’s body responds by -

• shedding thick fur

• clinking rapidly

• increasing the heart rate

• requiring more food

Tags

NGSS.MS-LS1-3

A student places a plant in a dark room next to growth lamp, while providing sufficient water and nutrients to ensure the plant's growth and survival. The plant will likely respond-

• bending towards the lamp

• wilting and eventually dying

• shedding all of its leave

• increasing its rate of photosynthesis

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

When a plant wilts due to lack of water, it is responding to which of the following internal stimuli?

• decreased water pressure within the plant cells

• lack of nutrients carried by water in the plant

• decreased rate of photosynthesis in the stem

• increased storage of glucose in the leaves

Tags

NGSS.MS-LS1-2

Stunted growth of an animal can be a response to -

• overexposure to sunlight

• lack of nutrients in diet

• eating a plant-based diet

• living in a hot climate

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

When an animal is infected with a virus, the body responds by creating conditions that are not favorable for the virus. It does this by -

• creating a sensation of hunger

• raising the core body temperature

• increasing sensitivity to sound

• inhibiting the sense of balance

Many birds migrate long distances when the seasons change. Which of the following is an environmental stimulus that would signal to the birds the changing seasons?

• changes in the length of daylight

• increase in the population of edible plants

• decreased number of offspring per hatching event

• increase in annual precipitation levels

Which of the following is a response to smelling food?

• rapid blinking

• excessive sweating

• increased hunger

• sensitivity to sound

Pain is a stimulus in animals that leads t o responses which help the animal to-

• find food in the habitat

• recuperate after exercise

• avoid harmful sutations

• fight serious infections