InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
Refer to the given figure and identify the parts labelled P,Q,R and S. A. `{:(P,Q,R,S),("Seed","Thalamus","Mesocarp","Endocarp"):}`B. `{:(P,Q,R,S),("Thalamus","Seed","Endocarp","Mesocarp"):}`C. `{:(P,Q,R,S),("Seed","Thalamus","Endocarp","Mesocarp"):}`D. `{:(P,Q,R,S),("Pericap","Seed","Mesocarp","Endocarp"):}` |
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Answer» Correct Answer - B The given figure is of false fruit of apple. Here P,Q,R and S are thalamus, seed, endocarp and mesocarp, respectively. |
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| 402. |
Identify the parts labelled A,B and C in the given figure and select the correct option. A. `{:(A,B,C),("Scutellum","Coleorhiza","Coleoptile"):}`B. `{:(A,B,C),("Scutellum","Coleoptile","Coleorhiza"):}`C. `{:(A,B,C),("Coleoptile","Scutellum","Coleorhiza"):}`D. `{:(A,B,C),("Coleorhiza","Scutellum","Coleoptile"):}` |
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Answer» Correct Answer - B Given figure represents the monocotyledonous embryo of a grass. |
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| 403. |
Which of the given statements are true? (i) During the development of a dicot embryo, heartshaped embryo is followed by globular embryo. (ii) The part of embryonal axis above the level of cotyledons is epicotyl, while the part below the level of cotyledons is epicotyl, while the part below the level of cotyledons is hypocotyl. (iii) Monocot seeds possess a single cotyledon represented by scutellum.A. (i) and (ii)B. (ii) and (iii)C. (i) and (iii)D. (i),(ii) and (iii) |
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Answer» Correct Answer - B During the development of dicot embryo, initially the dicot embryo is globular and undifferentiated. Early embryo with radial symmetry is called proembryo. It is transformed into embryo with the development of radicle, plumule and cotyledons. Two cotyledons differetiate from the sides with a faint plumule in the centre. At this time the embryo becomes heart-shaped part of embryo axis between the plumule and cotyledonary node is epicotyl (above the level of cotyledons) while the part between radicle and cotyledonary node is called hypocotyl (below the level of cotyledons). The single cotyledon of monocotyledonous seed (e.g. maize grain) is called scutellum. It occupies the major protion of the embryo regions of grain. |
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| 404. |
Persistent nucellus is called as______________and is found in __________.A. perispern, black pepperB. perisperm, groundnutC. endosperm, black pepperD. endosperm,groundnut |
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Answer» Correct Answer - A In some seeds, remains of nucellus persist. This residual nucellus which persists in the seed is called perisperm, e.g., black pepper, coffee, castor, cardamum, Nymphaea. |
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| 405. |
___________is not an endospermic seed.A. PeaB. CastorC. MaizeD. Wheat |
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Answer» Correct Answer - A Endosperm represents the food storing tissue of a seed. It is produced as a result of double fertilisation in angiosperms. In most monocots and some dicot seeds, the food reserve remains in the endosperm. They are called endospermic or albuminous seeds. e.g., maize, wheat, castor bean, coconut, barley, rubber. However, in the majority of dicot seeds (e.g., pea, gram, bean, mustard, groundnut) and some monocot seeds (e.g., orchids, Sagittaria), the endosperm is consumed during seed development and the food is stored in cotyledons and other regions. They are called nonedospermic or exalbuminous seeds. |
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| 406. |
Chasmogamy refers to the condition whereA. Flowers remain closedB. Flowers are absentC. Flowers are openD. Flower are gamopetalous |
| Answer» Correct Answer - C | |
| 407. |
In the centre of each microsporangium, there is a group of compactly arranged homogenous cells calledA. TapetumB. NucellusC. Sporogenous tissueD. pollen grains |
| Answer» Correct Answer - C | |
| 408. |
Coconut milk contains:A. Cytokinins and 3n nucleiB. Auxins and 2n nucleiC. Gibberellins and haploid nucleiD. Only cytokinins |
| Answer» Correct Answer - A | |
| 409. |
Remnants of nucellus present in seed of Black Pepper and Beet are calledA. PericarpB. PeridermC. EndospermD. Perisperm |
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Answer» Correct Answer - D Remnants of nucellus present is seed are called perisperm. |
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| 410. |
Pollina develop in:A. CalotropicB. AsclepiasC. OrchidsD. All of these |
| Answer» Correct Answer - D | |
| 411. |
Filiform apparatus is characteristic feature of :A. SynergidsB. Generative cellC. Nucellar embryoD. Aleurone cell. |
| Answer» Correct Answer - A | |
| 412. |
The spermatogenous cells of male gametophyte is:A. Vegetative cellsB. body cellC. Generative cellD. Stalk cell |
| Answer» Correct Answer - C | |
| 413. |
How many cells or nuclei are present in mature male gametophyte of CapsellaA. OneB. TwoC. ThreeD. Four |
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Answer» Correct Answer - C Cells present in mature male gametophyte of angiosperms is three (1 vegetative cell and 2 male gametes). |
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| 414. |
Assertion : Storage of seeds at low temperature is possible. Reason : Respiration and enzymatic activity of seeds are very high at low temperature.A. If both assertion and reason are true and the reason is a correct explanation of the assertion.B. If both assertion and reason are true but reason is not a correct explanation of the assertion.C. If the assertion is true but reason is false.D. If both the assertion and reason are false. |
| Answer» Correct Answer - C | |
| 415. |
Fragrant flowers with cell developed nectaries are an adaptation forA. hydrophilyB. anemophilyC. entomophilyD. none of these |
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Answer» Correct Answer - C Entomophilous flowers produce an odour which may be pleasant (e.g., jasmine) or foul (e.g., Aristolochia, Arum, Rafflesia). Small and nectar attract flies and other insects. |
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| 416. |
Fragrant flowers with cell developed nectaries are an adaptation forA. ZoophilyB. AnemophilyC. EntomophilyD. Hydrophily |
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Answer» Correct Answer - C Fragrant flowers with well-developed nectaries are an adaptation for entomophily. |
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| 417. |
Ruminate endosperm is found in:A. PalmaeB. PoaceaeC. AsteraceaeD. Leguminosae |
| Answer» Correct Answer - A | |
| 418. |
Well developed endosperm haustoria is found in:A. CucurbitsB. PeaC. MaizeD. None of these |
| Answer» Correct Answer - A | |
| 419. |
Pentaploid endosperm is found in:A. FertillariaB. AcalyphaC. PeperomiaD. Allium |
| Answer» Correct Answer - A | |
| 420. |
Route used by pollen tube for entering ovule isA. integumentB. micropyleC. chalazaD. any of the above |
| Answer» Correct Answer - D | |
| 421. |
The significance of double fertilization is that itA. provides stimulus to resume growth of embryo sacB. ensures the formation of endosperm only after fertilizationC. provides some characters of male plants to endospermD. all the above |
| Answer» Correct Answer - D | |
| 422. |
Write the significance of double fertilization . |
| Answer» Double fertilization lead to the development of triploid endosperm which provide sufficient food material to the developing healthy seeds. The triploid endosperm compensates for the extreme reduction of female gametophyte in angiosperms. | |
| 423. |
Differentiate between monoecious and dioecious plants. Give one example of each . |
| Answer» Monoecious plant have unisexual male and female flowers on the same plant , e.g., Maize . The diosecious plant , on the other hand , have unisexual male and female flowers on separate plant , e.g., Papaya. | |
| 424. |
Oil is obtained from the endosperm of:A. Coconut and RicinsB. Arachis and CoconutC. Sesamum and RicinsD. Brassica and Coconut |
| Answer» Correct Answer - A | |
| 425. |
Which fo the following change does not occurs in ovary as a result of sexual reproductin ?A. ovary wall - pericaripB. ovary - fruitC. ovule - fruit wallD. integument - speed coat |
| Answer» Correct Answer - C | |
| 426. |
Ovary culture reveals the physiochemical changes occuring during the formation of:A. SeedsB. Embryo from zygoteC. Endosperms in embryo sacD. Fruit |
| Answer» Correct Answer - D | |
| 427. |
Nurse tissue technique is applied in:A. Pollen cultureB. Embryo cultureC. Ovule cultureD. Ovary culture |
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Answer» Correct Answer - A In pollen culture, anthers are used as nurse cells for successful production of embryoids. |
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| 428. |
Tissue culture technique is applied in:A. BiotechnologyB. Experimental embryologyC. Microporogation and conservation of germplasmD. All of the above |
| Answer» Correct Answer - D | |
| 429. |
Fill in the blanks: E. The anther wall is composed of …….. to ………. layers. |
| Answer» Correct Answer - 4 to 5 | |
| 430. |
Function of filiform apparatus is to :-A. Guide the entry of pollen tubeB. Recognize the suitable pollen at stigmaC. Stimulate division of generative cellD. Produce nectar |
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Answer» Correct Answer - A Function of filiform apparatus is to guide the entry of pollen tube. |
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| 431. |
Geitonogamy involvesA. fertization of a flower by the pollen from another flower of the same plantB. fertization of a flower by the pollen from the same flowerC. fertization of a flower by the pollen from a flower of another plant in the same polulationD. fertization of flower by the pollen from a flower of another plant belonging to a distant population |
| Answer» Correct Answer - A | |
| 432. |
Geitonogamy involvesA. fertilisation of a flower by the pollen from, another flower of the same plantB. fertilisation of a flower by the pollen from the same flowerC. fertilisation of a flower by the pollen from a flower of another plant in the same populationD. fertilisation of a flower by the pollen from a flower of another plant belonging to a distant population |
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Answer» Correct Answer - A Geitonogamy is a type of self pollination. In other word geitonogamy is transfer of pollen grain from the anther of one flower to the stigma of another flower of either same or genetically similar plant. |
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| 433. |
Geitonogamy involvesA. Fertilization of a flower by the pollen from a flower of another plant belonging to a distant populationB. Fertilization of a flower by the pollen from another flower of the same plantC. Fertilization of a flower by the pollen from the same flowerD. Fertilization of a flower by the pollen from a flower of another plant in the same population. |
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Answer» Correct Answer - B Geitonogamy involves fertilization of a flower by the pollen from another flower of the same plant. |
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| 434. |
Geitonogamy involvesA. fertilization of a flower by the pollen from another flower of the same plantB. fertilization of a flower by the pollen from the same flowerC. fertilization of a flower by the pollen from a flower of another plant in the same populationD. fertilization of a flower by the pollen from a flower of another plant belonging to a distant population. |
| Answer» Correct Answer - A | |
| 435. |
What one is correct ?A. Albinism is genetic and etiolation is physidologicalB. Etiolation is genetic and albinism is physiologicalC. Etiolation is irreversibleD. Etiolation and albinism are synonyms |
| Answer» Correct Answer - A | |
| 436. |
Type of ovule present in Opuntia isA. AmphitropousB. CampylotropousC. CircinotropousD. Orthotropous |
| Answer» Correct Answer - C | |
| 437. |
Ovule of Opuntia is coiled and turn at more kthan `360^(@)` angle, is calledA. circinotropousB. anatropousC. hemitropousD. amphitropous |
| Answer» Correct Answer - A | |
| 438. |
Female gametophyte (megagametophyte of aniosperms) is represented byA. ovuleB. embryo sacC. megaspore mother cellD. megasporophyll |
| Answer» Correct Answer - B | |
| 439. |
Fill in the blanks : C. Fnctional … is the firs cell of female gametophyte |
| Answer» Correct Answer - megaspore | |
| 440. |
Fill in the blanks : B. ……… of pollen grains is made up of sporopollenin. |
| Answer» Correct Answer - Exine | |
| 441. |
Fill in the blanks : A. Production of synthetic (artificial ) seeds has also been possible through ……. culture . |
| Answer» Correct Answer - tissue | |
| 442. |
What is true about cleistogamy?A. It occurs in unisexual flowersB. It produces assured seed-set even in the absence of pollinatorsC. it leads to introduction of new useful charactersD. It is a method of geitonogamy |
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Answer» Correct Answer - B Cleistogamy is only possible in bisexual flowers. Since it is method of self -pollination. New useful characters are seldom introduced. Cleistogamy is a method of autogamy since the flower is pollinated by its own pollen. In geitonoamy pollen grains of one flower are transferred to the stigma of another flower belonging to either the same plant or genetically similar plant. |
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| 443. |
In angiosperms , which one of the following processes does not involve an unequal division ?A. Formation of microsporesB. Formation of generative cellC. Zygotic embryogenesisD. All of the above |
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Answer» Correct Answer - A Pollen grain divides into two unequal cells- small generative and large tube cell. Zygote divides into larger basal cell, suspensor cell and an embryo cell. |
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| 444. |
One meiosis produces how many male gametes ?A. 4B. 1C. 2D. 8 |
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Answer» Correct Answer - D One meiosis produce 4 pollen grains and each pollen grain produces 2 male gametes. Therefore one meiosis, in total , produce 8 male gametes. |
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| 445. |
Number of chromosomes is 12 in endosperm. What shall be the number in megaspore mother cell .A. 8B. 36C. 12D. 18 |
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Answer» Correct Answer - A Endosperm is `3 x = 12 , x = 4,` MMC is `2 x` and therefore `2x = 8`. |
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| 446. |
What would be number of chromosomes in aleurone layer if megaspore mother cell contains 10 chromocomesA. 10B. 20C. 15D. 30 |
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Answer» Correct Answer - C MMC (2n) has chromosome 10, then n=5 then aleurone layer (3n) `=3xx5=15` |
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| 447. |
Pollen viability for rice and wheat plant isA. 30 hoursB. several monthsC. `1//2` hourD. 30 seconds |
| Answer» Correct Answer - C | |
| 448. |
Fill in the blanks: G. Plants with reduced power of ……………. Reproduction ………….. Dormant period of seed or …………. viability ware propagated through vegetative reproduction. |
| Answer» sexual ,long , poor | |
| 449. |
Fill in the blanks: I. The wind-pollinated flowers are generally …….. sexual. |
| Answer» Correct Answer - uni | |
| 450. |
Fill in the blanks: F. The flowers producing ……. and ……. with bright …….. attract the insects. |
| Answer» nectar, fragrance , colour | |