MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 2637 Mcqs, each offering curated multiple-choice questions to sharpen your 7th Class knowledge and support exam preparation. Choose a topic below to get started.
| 551. |
Mushrooms reproduce through |
| A. | spores |
| B. | modified stems |
| C. | buds on leaf margin |
| D. | fission |
| Answer» C. buds on leaf margin | |
| 552. |
When spores of fungi in a bread piece are released, why do they keep floating in air? |
| A. | they are light |
| B. | they can move only slowly |
| C. | they are asexual reproductive bodies |
| D. | all of the above |
| Answer» B. they can move only slowly | |
| 553. |
Which of the following characteristics are common to both wind and water pollinated flowers? (i) Pollen grains are long and ribbon-like. (ii) Stigma is large and feathery. (iii) The flowers are not colourful. (iv) The flowers do not produce nectar. |
| A. | (i) and (ii) only |
| B. | (iii) and (iv) only |
| C. | (ii) and (iii) only |
| D. | (i) and (iv) only |
| Answer» C. (ii) and (iii) only | |
| 554. |
Mature ovary forms the |
| A. | seed |
| B. | stamen |
| C. | pistil |
| D. | fruit |
| Answer» E. | |
| 555. |
Which of the following are bisexual flowers? |
| A. | Corn |
| B. | Papaya |
| C. | Rose |
| D. | Cucumber |
| Answer» D. Cucumber | |
| 556. |
Spores are |
| A. | asexual reproductive bodies |
| B. | sexual reproductive bodies |
| C. | covered by delicate coatings |
| D. | all the above are correct |
| Answer» C. covered by delicate coatings | |
| 557. |
Select the plant whose buds are in the margin of leaves. |
| A. | potato |
| B. | ginger |
| C. | sprout leaf plant |
| D. | turmeric |
| Answer» D. turmeric | |
| 558. |
Vegetative buds are |
| A. | buds in the axil |
| B. | flower buds |
| C. | both of these |
| D. | none of these |
| Answer» D. none of these | |
| 559. |
Select the method of asexual reproduction. |
| A. | Fragmentation |
| B. | Budding |
| C. | Spore formation |
| D. | all of the above |
| Answer» E. | |
| 560. |
Select the one that is true about cross pollination |
| A. | generally it results in higher yield of plants |
| B. | It takes place only in unisexual flowers |
| C. | It can fail to occur because of distance barrier |
| D. | It requires production of large number of pollen grains. |
| Answer» E. | |
| 561. |
Pollen grains of insect pollinated flowers are |
| A. | smooth and sticky |
| B. | Smooth and rough |
| C. | Rough and dry |
| D. | Rough and sticky |
| Answer» E. | |
| 562. |
Male reproductive part of a plant is |
| A. | pores |
| B. | pistil |
| C. | stamen |
| D. | ovary |
| Answer» C. stamen | |
| 563. |
Read the given statements (i to vii) describing the events that lead to the maturation of a plant. (i) The root grows first. (ii) The seedling obtains the food it needs from the cotyledons. (iii) The part that comes out next is the shoot. (iv) It grows downwards because of gravity. (v) The seedling develops its leaves and starts making food. (vi) More leaves will develop as the plant grows. (vii) The seed leaves now no longer needed, wither, die and fall off. Now, select the correct option from the codes given below to put the events in a correct order. |
| A. | (i)\[\to \]-(iii)\[\to \](ii)\[\to \](iv)\[\to \](v)\[\to \](vii)\[\to \](vi) |
| B. | (i)\[\to \](iii)\[\to \](v) \[\to \] (iv)\[\to \](ii)\[\to \](vii)\[\to \] (vi) |
| C. | (i) \[\to \](iv)\[\to \](iii) (v)\[\to \](ii)\[\to \](vii)\[\to \](vi) |
| D. | (i)\[\to \](iv)\[\to \] (iii) (ii)\[\to \](v)\[\to \](vii)\[\to \](vi) |
| Answer» E. | |
| 564. |
Refer to the given figure and select the correct statement(s). (i) The part labelled as P gives rise to fruit. (ii) The part labelled as R is responsible for transfer of female gamete. (iii) The part labelled as Q transforms into endosperm, (iv) The part labelled as Q is ferns -gamete. (v) The part labelled as R carries pollen. |
| A. | (i) only |
| B. | (i) and (iii) |
| C. | (iii) and (iv) only |
| D. | (ii) and (v) only |
| Answer» C. (iii) and (iv) only | |
| 565. |
Germination occurs when |
| A. | an already dormant embryo is activated |
| B. | the cotyledons emerge above ground |
| C. | either hypocotyls or epicotyls emerges above ground |
| D. | Vascular tissue begins the transport of water and minerals. |
| Answer» B. the cotyledons emerge above ground | |
| 566. |
Select the one that does not reproduce from seeds. |
| A. | Rose |
| B. | Pine |
| C. | Oak |
| D. | Moss |
| Answer» E. | |
| 567. |
The following investigation was carried out using flower buds growing on three plants of the same species : Plant 1 The anthers were carefully removed and the buds left open to the air. Plant 2 The anthers were left untouched and a paper bag was tied tightly around each bud. Plant 3 The anthers were carefully removed and a paper bag was tied tightly around each bud. All flowers were opened normally but only those on plant 1 produced seeds. What can be inferred from it? |
| A. | Only cross-pollination can take place in this plant species. |
| B. | Only wind-pollination can take place in this plant species. |
| C. | Only insect-pollination can take place in this plant species. |
| D. | Both self and cross-pollination can take place in this plant species. |
| Answer» B. Only wind-pollination can take place in this plant species. | |
| 568. |
The pollen of a flowering plant |
| A. | Contains sperm cells |
| B. | is brightly coloured to attract insects |
| C. | holds the embryo |
| D. | is produced by the pistil |
| Answer» B. is brightly coloured to attract insects | |
| 569. |
Refer to the given figure showing three parent species, X, Y and Z (in plot I) and their respective seedlings after dispersal (in plot II). Select the incorrect statement regarding species X, Y and Z. (i) X could be pea plant in which fruits burst open forcibly after drying. (ii) Y could be Xanthium in which seeds are hooked i.e., have spines. (iii) Z could be Acer in which fruits and seeds have wings or hair like structure.(iv) X could be coconut, Y could be lotus and Z could be Calotropis. |
| A. | (iii) and (iv) only |
| B. | (i) and (ii) only |
| C. | (iii) only |
| D. | (iv) only |
| Answer» E. | |
| 570. |
The process of fertilization of angiosperms is called |
| A. | Single fertilization |
| B. | Double fertilization |
| C. | Multiple fission |
| D. | None of these |
| Answer» C. Multiple fission | |
| 571. |
Ruchi collected four different kinds of seeds (W, X, Y and Z). The characteristic of each seed is given below. Identify the seeds and the agent of their dispersal and select the correct option.W Surrounded by tiny hairX Thick coat of fibresY Presence of hooks or spines Z Enclosed in a fruit that bursts open when mature |
| A. | SeedAgent of dispersalW - DandelionWater |
| B. | SeedAgent of dispersalX - CoconutExplosion |
| C. | SeedAgent of dispersal Y - XanthiumAir |
| D. | SeedAgent of dispersal Z - CottonExplosion |
| Answer» C. SeedAgent of dispersal Y - XanthiumAir | |
| 572. |
Growth of a new organism on or inside the parent body is called |
| A. | Fragmentation |
| B. | Grafting |
| C. | Budding |
| D. | all of these |
| Answer» D. all of these | |
| 573. |
Refer to the given dichotomous key and select the correct statement.(i) (a) Single parent is involved - Go to (ii)(b) Two parents are involved - Go to (v)(ii) (a) New plants are produced by natural method - Go to (iii)(b) New plants are produced by artificial method - Go to (iv)(iii) (a) Plant produced through stem – P(b) Plant produced through root – Q(iv) (a) Plant produced from unorganized cell mass – R(b) Plant produced by bending young branch towards the ground and covered with moist soil – S(v) (a) Plant produced when pollen grains are transferred to the stigma of same flower of the same plant – T(b) Plant produced on transferring pollen grains to the stigma of different flower - U |
| A. | P could be sweet potato while S could be Asparagus. |
| B. | R could be Asparagus which grows in suitable nutrient medium. |
| C. | T could be papaya while U could be Hibiscus. |
| D. | Q could be potato which possesses scars or depressions called eyes. |
| Answer» C. T could be papaya while U could be Hibiscus. | |
| 574. |
Study the given diagrams showing the cross-section of two flowers. Which of the following statements is/are incorrect regarding them? (i) These plants have developed from seeds. (ii) Flower X is a female flower and flower Y is a bisexual flower. (iii) Fertilization can take place in both flowers. |
| A. | (i) only |
| B. | (ii) only |
| C. | (i) and (iii) only |
| D. | (ii) and (iii) only |
| Answer» C. (i) and (iii) only | |
| 575. |
Reproduction is described as a phenomenon by which of these options? |
| A. | increase in size |
| B. | increase in number |
| C. | form new tissues and organs |
| D. | develop from zygotes |
| Answer» C. form new tissues and organs | |
| 576. |
Vegetative propagation refers to the formation of new plants from the following existing organs of the old plants: |
| A. | stems, roots, flowers |
| B. | stems, flowers, fruits |
| C. | roots, stems, leaves |
| D. | stems, leaves, flowers |
| Answer» D. stems, leaves, flowers | |
| 577. |
Read the given statements (i-iv) with one or two blanks and select the option that correctly fills any two of the statements.(i) In grafting, a cutting having buds from one plant called the ____ is kept over the stem with roots of another plant called the ____. (ii) Unorganized mass of the cells in the tissue culture is called___. (iii) The shoot forming part of embryo is called ___ while the root forming part of embryo is called__.(iv) The process of fusion of male gamete with female gamete to form a zygote is called__. |
| A. | (i) Scion, Stock; (iv) Pollination |
| B. | (ii) Callus; (iii) Plumule, Radicle |
| C. | (ii) Explant; (iii) Radicle, Plumule |
| D. | (i) Stock, Scion; (ii) Reproduction |
| Answer» C. (ii) Explant; (iii) Radicle, Plumule | |
| 578. |
Reproduction is essential for living organism in order to |
| A. | Keep individual organ alive |
| B. | Maintain growth |
| C. | Fulfill their energy requirement |
| D. | continue the species forever |
| Answer» E. | |
| 579. |
Refer to the given flow chart and select the option which correctly identifies X, Y and Z. |
| A. | X Y Z Moss Bryophyllum Maize |
| B. | X Y Z Moss Pineapple Begonia |
| C. | X Y Z Bryophyllum Begonia Moss |
| D. | X Y Z Moss Papaya Pineapple |
| Answer» B. X Y Z Moss Pineapple Begonia | |
| 580. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Name the parts labeled as X and Y |
| A. | X = plumule, Y = testa |
| B. | X = plumule, Y = radicle |
| C. | X = food store, Y = radicle |
| D. | X = radicle, Y = testa |
| Answer» E. | |
| 581. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Study the picture given below and then answer the question. The parts in the flower labeled as X and Y are |
| A. | X = petal, Y = stalk |
| B. | X = sepal, Y = carpel |
| C. | X = petal, Y = anther |
| D. | X = sepal, Y = anther |
| Answer» E. | |
| 582. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. The given figure represents a carpel. Select the part that bears the female gamete. |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 583. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) Spirogyra reproduce by budding (ii) Rose reproduce by stem cutting (iii) Yeast reproduce by fragmentation |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» B. Statements (i) and (ii) are incorrect but (iii) is correct. | |
| 584. |
Male gametes are present in |
| A. | anther |
| B. | ovary |
| C. | filament |
| D. | style |
| Answer» B. ovary | |
| 585. |
Read the given passage.The flowers of X plant contain either stamen or pistil while flowers of plant Y contain both stamens as well as pistil.Select the correct statement regarding X and Y. |
| A. | In X, seed setting is assured even in the absence of pollinating agent. |
| B. | X could be mustard while Y could be papaya. |
| C. | In normal conditions, all the plants of V changes into seeds after fertilization. |
| D. | The flowers of X prevents cross pollination. |
| Answer» D. The flowers of X prevents cross pollination. | |
| 586. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) Moringa seeds are dispersed by wind (ii) The seeds of Balsam are dispersed by explosion (iii) Seeds of coconut are dispersed by water |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» D. All statements are incorrect. | |
| 587. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) A flower that contain only male or female parts is called bisexual flowers. (ii) A flower that contain all four parts is known as incomplete flower. (iii) A flower which contains only male or female part is called complete flower. |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» E. | |
| 588. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) Roots of potato cannot give rise to new plants (ii) Plants produced by vegetative propagation take longer time to grow and bear flowers. (iii) Spores are asexual reproduction bodies |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» C. All statements are correct. | |
| 589. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) To cut any branch of a plant called cutting (ii) In asexual reproduction, without seeds plant can give rise to new plants (iii) Vegetative propagation is a method of asexual reproduction |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» B. Statements (i) and (ii) are incorrect but (iii) is correct. | |
| 590. |
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Parts of pistil are anther and filament. Reason (R): Bisexual flowers are those which contain both stamen and pistil. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» E. | |
| 591. |
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Yeast grows and multiplies every few hours if sufficient nutrients are available to it. Reason (R): When water and nutrients are available algae grow and multiply rapidly by budding. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» D. A is false but R is true. | |
| 592. |
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Vegetative propagation is a method of asexual reproduction in plants. Reason (R): In asexual reproduction new plants are obtained without production of seed or spore. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» B. Both A and R are true but R is not the correct explanation of A. | |
| 593. |
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): A flower may either have a male or a female part. Reason (R): A flower having both male and female parts is called bisexual flower. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» C. A is true but R is false. | |
| 594. |
The given table lists some plants and their reproductive structures. Plants Reproductive structures Bean plant X Onion Seeds Spores What should be at X and Y? |
| A. | X - Fern, Y - Spores |
| B. | X - Pineapple, Y ? Corms |
| C. | X - Moss, Y ? Bulbs |
| D. | X - Moss, Y ? Leaves |
| Answer» D. X - Moss, Y ? Leaves | |
| 595. |
Anushka bagged four different kinds of flowers on the potted plants as shown below and left them undisturbed. Which of these four flowers is most likely to produce fruits and seeds? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» D. | |
| 596. |
The process by which plants give rise to new plants without seeds is called |
| A. | Sexual reproduction |
| B. | Vegetative propagation |
| C. | Asexual reproduction |
| D. | Budding |
| Answer» C. Asexual reproduction | |
| 597. |
Prashant observed flowers of two different plants X and Y. Flowers of X are large, coloured, showy and produce nectar while flowers of V are small, dull without nectar.Pollen grains of X are sticky and bigger while pollen grains of Y are small in size and dry.Which of the following is correct regarding X and Y? |
| A. | X could be pollinated by insect whereas Y could be pollinated by wind. |
| B. | X could be pollinated by wind whereas Y could be pollinated by water. |
| C. | X could be pollinated by wind whereas Y could be pollinated by insect. |
| D. | X could be pollinated by water whereas Y could be pollinated by insect. |
| Answer» B. X could be pollinated by wind whereas Y could be pollinated by water. | |
| 598. |
Which of the following parts of the flower shown below are the anther and stigma respectively? |
| A. | K, L |
| B. | L, M |
| C. | M, N |
| D. | N, K |
| Answer» B. L, M | |
| 599. |
Which organism is described in the information given below? (i) Respire anaerobically (ii) Used to make wine (iii) Reproduces by budding |
| A. | Potato |
| B. | Grapes |
| C. | Yeast |
| D. | Mucor |
| Answer» D. Mucor | |
| 600. |
Which type of reproduction is shown in the diagram given below? |
| A. | Binary fission |
| B. | Fragmentation |
| C. | Sporulation |
| D. | Bidding |
| Answer» C. Sporulation | |