science
Grade-4-
Easy
Question
Venus flytrap is sensitive to heat
- True
- False
Hint:
It has sensitive trigger hairs.
The correct answer is 'False'.
The statement is false.
- They trap prey, mainly insects and arachnids, in trapping structures formed by the terminal part of each plant leaf, triggered by tiny hairs called 'trigger hairs' or 'sensitive hairs' on the inside of the leaf.
- When an insect or spider crawling along the leaf touches the hair, the trap prepares to close and only closes on further contact within about 20 seconds of the initial attack.
- A trigger can occur on contact for tenths of a second.
- The plant only begins digesting after five more rounds of stimulation to ensure that it catches live insects worth eating.
Related Questions to study
science
The following picture shows _____________ in plants.
The correct option is b)geotropism.
- Gravitropism or geotropism is the coordinated process by which plants undergo differential growth in response to the gravity that pulls them.
- Roots show positive gravitropism and stems negative gravitropism. That is, roots grow in the direction of gravity (i.e. down) and stems grow in the opposite direction (i.e. up).
- This behavior is easily demonstrated in potted plants. When laid on its side, the growing part of the stem begins to exhibit negative gravitropism and grows upward.
The following picture shows _____________ in plants.
scienceGrade-4-
The correct option is b)geotropism.
- Gravitropism or geotropism is the coordinated process by which plants undergo differential growth in response to the gravity that pulls them.
- Roots show positive gravitropism and stems negative gravitropism. That is, roots grow in the direction of gravity (i.e. down) and stems grow in the opposite direction (i.e. up).
- This behavior is easily demonstrated in potted plants. When laid on its side, the growing part of the stem begins to exhibit negative gravitropism and grows upward.
science
The following picture shows _____________ in plants.
The correct option is c)Phototropism.
- Phototropism is the growth of organisms in response to light stimuli. Phototropism is most commonly found in plants, but can also occur in other organisms such as fungi
- . Plant cells furthest from light contain hormones called auxins that react when phototropism occurs. This causes plants to have elongated cells on the side furthest from light.
- Phototropism is one of many plant tropisms, or movements in response to external stimuli.
- Growing towards the light source is called positive phototropism and growing away from the light is called negative phototropism.
The following picture shows _____________ in plants.
scienceGrade-4-
The correct option is c)Phototropism.
- Phototropism is the growth of organisms in response to light stimuli. Phototropism is most commonly found in plants, but can also occur in other organisms such as fungi
- . Plant cells furthest from light contain hormones called auxins that react when phototropism occurs. This causes plants to have elongated cells on the side furthest from light.
- Phototropism is one of many plant tropisms, or movements in response to external stimuli.
- Growing towards the light source is called positive phototropism and growing away from the light is called negative phototropism.
science
Which of the following is not a response to touch seen in plants?
Which of the following is not a response to touch seen in plants?
scienceGrade-4-
science
When plants grow in response to a stimulus, it is referred to as _______________
When plants grow in response to a stimulus, it is referred to as _______________
scienceGrade-4-
science
The word “photo” in phototropism means:
The word “photo” in phototropism means:
scienceGrade-4-
science
Plants growing towards a source of light exhibit _____________.
Plants growing towards a source of light exhibit _____________.
scienceGrade-4-
science
Which statement best defines “tropism”
Which statement best defines “tropism”
scienceGrade-4-
science
The Venus flytrap is well known for its sensitivity towards ________.
The Venus flytrap is well known for its sensitivity towards ________.
scienceGrade-4-
science
Which is true about a plant’s response to gravity?
Which is true about a plant’s response to gravity?
scienceGrade-4-
science
Negative tropism means:
Negative tropism means:
scienceGrade-4-
science
The following picture shows which tropism?
The following picture shows which tropism?
scienceGrade-4-
science
What is INCORRECT about geotropism.
What is INCORRECT about geotropism.
scienceGrade-4-
science
The Venus-flytrap is an ___________ plant
The Venus-flytrap is an ___________ plant
scienceGrade-4-
science
Which of the statements best defines a “stimulus”.
Which of the statements best defines a “stimulus”.
scienceGrade-4-
science
Vines respond to touch by:
Vines respond to touch by:
scienceGrade-4-
