1. Which of the following features would you detect in the grass in combination?
(a) Parallel venation and a fibrous root
(b) parallel venation with a taproot
(c) Fibrous root and reticulate venation
(d) Taproot and reticulate venation:
1. Which of the following features would you detect in the grass in combination?
(a) Parallel venation and a fibrous root
(b) parallel venation with a taproot
(c) Fibrous root and reticulate venation
(d) Taproot and reticulate venation:
Explanation:
Parallel venation and fibrous root are in (a).
Grass, maize, wheat, and other similar plants typically have parallel venation and fibrous roots.
Veins in a leaf that have parallel venation run parallel to one another.
Thin, fiber-like roots called fibrous roots grow in clusters from the stem's base.
2. Which of the following best describes the relationship between a plant's category and its stem characteristics?
(a) The stem that is frail and unable to hold upright Creeper
(b) Green tender stem Shrub
(c) Hard, thick stem that branches close to the base: Tree
(d) A tall plant with a thick, rigid stem and branches: Herb
2. Which of the following best describes the relationship between a plant's category and its stem characteristics?
(a) The stem that is frail and unable to hold upright Creeper
(b) Green tender stem Shrub
(c) Hard, thick stem that branches close to the base: Tree
(d) A tall plant with a thick, rigid stem and branches: Herb
Explanation:
(a) A weak stem that is unable to stand erect Creeper
Herbs are little plants with a weak, brittle stem that is green and unable to hold upright.
Medium-sized shrubs are plants with a thick, sturdy stem with branches close to the base. Trees are tall plants with a sturdy, thick stem and branches that extend high from the plant.
3. Which of the following is not the stem's main purpose?
(a) Water conductivity
(b) photosynthesis
(c) branch formation.
(d) and bearing of flowers and fruits.
3. Which of the following is not the stem's main purpose?
(a) Water conductivity
(b) photosynthesis
(c) branch formation.
(d) and bearing of flowers and fruits.
Explanation:
Photosynthesis (b)
Photosynthesis is the leaf's main function.
The stem's primary roles include supporting the plant's upright posture, forming branches that yield flowers and fruit, and assisting in the movement of water from the roots to the leaves.
4. Which of the options below is incorrect?
(a) Petiole: secures the leaf to the stem;
(b) Lamina: the flat, green portion of the leaf
(c) Margin: gives the leaf form
(d) Veins: allow transpiration.
4. Which of the options below is incorrect?
(a) Petiole: secures the leaf to the stem;
(b) Lamina: the flat, green portion of the leaf
(c) Margin: gives the leaf form
(d) Veins: allow transpiration.
Explanation:
Veins: transpiration (d)
The veins in a leaf provide nutrients, water, and minerals while also supporting it.
5. Read the sentences that follow regarding photosynthesis.
(i) Water, sunlight, carbon dioxide, and chlorophyll are essential.
(ii) The oxygen is taken in.
(iii) Photosynthesis occurs in leaves.
(iv) During photosynthesis, proteins are created.
Choose the appropriate sentence combination that accurately describes photosynthesis.
(a) (iii) and (iv) (b) (i) and (iii) (c) (ii) and (iv) (d) (i) and (iv).
5. Read the sentences that follow regarding photosynthesis.
(i) Water, sunlight, carbon dioxide, and chlorophyll are essential.
(ii) The oxygen is taken in.
(iii) Photosynthesis occurs in leaves.
(iv) During photosynthesis, proteins are created.
Choose the appropriate sentence combination that accurately describes photosynthesis.
(a) (iii) and (iv) (b) (i) and (iii) (c) (ii) and (iv) (d) (i) and (iv).
Explanation:
(b): I and (iii)
In leaves, photosynthesis occurs. Sunlight, carbon dioxide, chlorophyll, and water are required for photosynthesis to occur. A release of oxygen occurs during photosynthesis. During photosynthesis, glucose, a type of carbohydrate, is produced.
6. Which of the above names best describes the feminine portion of a flower?
(a) Petals, stamen, and sepals
(b) The ovary, style, and stigma
(c) Stamen, stigma, and ovary
(d) style, stamen, and ovary
6. Which of the above names best describes the feminine portion of a flower?
(a) Petals, stamen, and sepals
(b) The ovary, style, and stigma
(c) Stamen, stigma, and ovary
(d) style, stamen, and ovary
Explanation:
(c) Stigma, fashion, and ovary
The carpel is a flower's reproductive organ for females (pistil). It is made up of the ovary, style, and stigma.
Petals and sepals are auxiliary components.
The male reproductive components of a flower are stamens.
7. Complete the gaps.
(a) What are called ____ are the little green leaves at the base of blooms.
(b) The ____, which bears the ____, is the enlarged basal portion of the pistil.
(c) The two components of the stamen are ___ and .
(d) The name for a young, unopened blossom is ...............
7. Complete the gaps.
(a) What are called ____ are the little green leaves at the base of blooms.
(b) The ____, which bears the ____, is the enlarged basal portion of the pistil.
(c) The two components of the stamen are ___ and .
(d) The name for a young, unopened blossom is ...............
Explanation:
(a) sepals
(b) ovary with ovules
(c) anther, filament
(d) bud.
8. Address the below-listed riddles.
(a) "I am considerably shorter than you and have a green, sensitive stem. What am I?
(b) After the seed has been steeped in water, I emerge first from it. I provide plants a place to anchor. I, who? Please describe a different task I carry out.
8. Address the below-listed riddles.
(a) "I am considerably shorter than you and have a green, sensitive stem. What am I?
(b) After the seed has been steeped in water, I emerge first from it. I provide plants a place to anchor. I, who? Please describe a different task I carry out.
Explanation:
(a) My name is "Herb." Herbs are little plants with a supple, green stalk.
(b) I am "Root" When the seed is soaked in water, the root emerges from the seed first.
The root's ability to absorb water and minerals from the soil is another function.
9. Match the parts of the plant given in column I with their function in column II.
Column I Column II
(a) Flower (i) Excretion
(b) Leaf (ii) Photosynthesis
(c) Stem (iii) Reproduction
(d) Root (iv) Bears branches
(v) Anchorage
9. Match the parts of the plant given in column I with their function in column II.
Column I Column II
(a) Flower (i) Excretion
(b) Leaf (ii) Photosynthesis
(c) Stem (iii) Reproduction
(d) Root (iv) Bears branches
(v) Anchorage
Explanation:
Column I Column II
(a) Flower (iii) Reproduction
(b) Leaf (ii) Photosynthesis
(c) Stem (iv) Bears branches
(d) Root (v) Anchorage
10. Boojho wished to examine the starch content of leaves. He then took the subsequent actions.
(1) He used a leaf and put it in water to boil it.
(2) He added some iodine to the leaf and put it in a petri dish.
He did not receive the anticipated outcome. What motion did he miss? Explain.
10. Boojho wished to examine the starch content of leaves. He then took the subsequent actions.
(1) He used a leaf and put it in water to boil it.
(2) He added some iodine to the leaf and put it in a petri dish.
He did not receive the anticipated outcome. What motion did he miss? Explain.
Explanation:
The leaf must first be boiled in water, then it must be heated in alcohol to release chlorophyll in order to remove the green colour.
Boojho failed to complete the necessary step of boiling the leaf in alcohol, which would have eliminated the chlorophyll, hence he did not get the desired outcome (i.e. change in colour of the leaf).
11. When tested for starch, will a leaf from a potted plant left in a dark room for a few days turn blue-black? Explicitly justify your response.
11. When tested for starch, will a leaf from a potted plant left in a dark room for a few days turn blue-black? Explicitly justify your response.
Explanation:
No, it won't turn blue-black since the plant would have used all of the leaf's starch. Moreover, the absence of sunshine prevented the leaves from producing any starch.
12. Can a street with two-way traffic be compared to a plant's stem? cite a cause.
12. Can a street with two-way traffic be compared to a plant's stem? cite a cause.
Explanation:
Certainly, it is possible to relate a plant's stem to a two-way street. The reason for this is that food goes downward in the stem while water and minerals move upward.
From the root to the leaves and other parts of the plant, the stem delivers water and minerals (upward).
The food that the leaves prepare moves through the stem to the other plant sections and roots (downward).
13. Review the list of plant parts' functions below.
(a) Plants are fixed to the earth in order to:
(b) produce starch
(c) participate in reproduction
(d) support branches and bear blooms.
Write the names of the components whose functions you have just read about in the relevant spaces of the diagram shown in Fig. 7.1.
13. Review the list of plant parts' functions below.
(a) Plants are fixed to the earth in order to:
(b) produce starch
(c) participate in reproduction
(d) support branches and bear blooms.
Write the names of the components whose functions you have just read about in the relevant spaces of the diagram shown in Fig. 7.1.
Explanation:
(a) Roots anchor the plant to the ground
(b) Prepares leaf starch
(c) Participates in sexual reproduction – Flower
(d) Bears blooms and supports branches - Stem
14. Sketch the leaf veins shown in Fig. 7.2 below and identify the vein type.
14. Sketch the leaf veins shown in Fig. 7.2 below and identify the vein type.
Explanation:
15. Study Fig. 7.3 and try your hand at the problems that follow.
(a) Give the diagram's components 1, 2, 3, and 4 labels.
(b) What kind of venation does the leaf possess?
(c) What kind of venation do grass leaves have?
15. Study Fig. 7.3 and try your hand at the problems that follow.
(a) Give the diagram's components 1, 2, 3, and 4 labels.
(b) What kind of venation does the leaf possess?
(c) What kind of venation do grass leaves have?
Explanation:
(a) Petiole in Part 1
Section 2: Midrib
Third Part: Lamina
Section 4: Veins
(b) The leaf's venation is reticulate. Veins take on the appearance of a network in reticulate venation.
(c) Parallel venation can be seen in grass leaves.
16. Examine the image of the activity depicted in Fig. 7.4 that was done using plant leaves and a polythene bag.
Next, respond to the following:
(a) What process, is illustrated in the activity?
(b) Will a sunny day or a gloomy day produce greater results for this activity?
(c) What will you notice in the polythene bag after the activity has been put up for a few hours?
(d) Describe any safety measures you need to take when carrying out this activity.
16. Examine the image of the activity depicted in Fig. 7.4 that was done using plant leaves and a polythene bag.
Next, respond to the following:
(a) What process, is illustrated in the activity?
(b) Will a sunny day or a gloomy day produce greater results for this activity?
(c) What will you notice in the polythene bag after the activity has been put up for a few hours?
(d) Describe any safety measures you need to take when carrying out this activity.
Explanation:
(a) The example activity illustrates the transpiration process.
(b) Because the rate of transpiration rises in the presence of intense sunshine, (b) this action produces superior outcomes on a bright, sunny day.
(c) Little drops of water would be seen within the polythene cover after a few hours.
(d) (i). The setup must be airtight.
(ii) The plastic bag needs to be dry.
(iii) The branch or leaves must be young and have 10 to 12 leaves.
17. Recognize the false statements and refute them.
(A) The pistil includes the anther.
(b) The petals make up a bud's visible components.
(c) A taproot contains lateral roots.
(d) The only activity carried out by leaves is transpiration.
17. Recognize the false statements and refute them.
(A) The pistil includes the anther.
(b) The petals make up a bud's visible components.
(c) A taproot contains lateral roots.
(d) The only activity carried out by leaves is transpiration.
Explanation:
(a) The anther is a component of the stamen, hence the statement is false.
(b) The assertion is incorrect—the sepals are what are visible on a bud.
(c) The assertion is true.
(d) The statement is incorrect - In addition to transpiration, leaves also engage in photosynthesis and gas exchange through microscopic pores known as stomata.
18. Use the hints below to solve the crossword puzzle in Fig. 7.5.
Across :
1. The phrase used to describe the water rising in a stem.
3. The area of the leaf where the stem is attached.
5. The filament tip is connected to this component.
Down :
1. Weak plants that cover a large area of the ground.
2. This area of the flower contains ovules.
4. Is a leaf's broad end?
18. Use the hints below to solve the crossword puzzle in Fig. 7.5.
Across :
1. The phrase used to describe the water rising in a stem.
3. The area of the leaf where the stem is attached.
5. The filament tip is connected to this component.
Down :
1. Weak plants that cover a large area of the ground.
2. This area of the flower contains ovules.
4. Is a leaf's broad end?
Explanation:
Across :
1. Conduction
3. Petiole
5. Anther
Down :
1. Creepers
2. Ovary
4. Lamina
19. Use the terms mentioned below to fill in the gaps.
Male anther, ovary, ovule, petals, pistil, stamen, filament, and ovule.
Sepals, (a) ____, stamens and (b) ____ are the parts of a flower. Stamen is made up of (c) ____ and (d) ____, and it represents the (e) ____part of the flower. The female part of the flower is called the (f) _____. The basal, swollen part of the pistil is called the (g) ____, which contains the (h) _____.
19. Use the terms mentioned below to fill in the gaps.
Male anther, ovary, ovule, petals, pistil, stamen, filament, and ovule.
Sepals, (a) ____, stamens and (b) ____ are the parts of a flower. Stamen is made up of (c) ____ and (d) ____, and it represents the (e) ____part of the flower. The female part of the flower is called the (f) _____. The basal, swollen part of the pistil is called the (g) ____, which contains the (h) _____.
Explanation:
(a) Flowers
(b) pistil
(c) Anther
(d) filament
(e) male
(f) pistil
(g) Ovarian
(h) ovules
