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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
L.S of maize seed is given below. Observe the diagram and label the parts. |
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Answer» 1. Endosperm 2. Scutellum 3. Coleoptile 4. Plumule |
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| 2. |
What is placentation ?Give two types with example. |
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Answer» It is the mode of arrangement of ovules in an Ovary 1. Axile placentation – Arrangement of ovules in the axis of ovary having septa. 2. Free central placentation – Arrangement of ovules in the central part of ovary without having septa. |
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| 3. |
Observe the relationship between first two words and fill up the suitable word in the next place. 1. Shoot – plumule: Root ………….. 2. Outer integument – testa: Inner integnment ……… |
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Answer» 1. Radicle 2. tegmen |
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| 4. |
Give the technical term of the following 1. Two leaves at each node 2. flowers cannot be divided into two equal halves 3. position of ovary is higher than other oral whorls 4. carpels are fused |
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Answer» 1. opposite phyllotaxy 2. asymmetric 3. Hypogynous flower 4. syncarpous |
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| 5. |
When your teacher asked to write a few examples for root modifications, a student wrote Potato. Is it correct? Why ? |
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Answer» No, Potato is an example of underground stem modification. |
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| 6. |
When your teacher asked to write a few examples for root modifications, a student wrote Potato. Is it correct? Why ? |
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Answer» No. Stem modification |
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| 7. |
Based on the relationship, fill in the blanks. 1. Prop root: Support Pneumatophore: ………. 2. Transpiration: Stomata Guttation: ………. |
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Answer» 1. breathing /respiration 2. Hydathode |
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| 8. |
Note the difference between the placenta and thalamus. |
Answer»
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| 9. |
1. Identify the type of placentation given below.2. Differentiate between apocarpous and syncarpous condition |
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Answer» 1. marginal, axile, parietal, freecentral,basal 2. apocarpous – free carpels. Syncarpous – fused carpels |
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| 10. |
Label the regions of the root tip in the given diagram. |
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Answer» 1. Root cap 2. Meristematic 3. Region of elongation 4. Root hair region |
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| 11. |
Thorns and spines are different modified structures in citrus and cactus. 1. Which plant part is modified ? 2. Give its function. |
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Answer» 1. Thorns – stem modification, Spines – Leaf modification 2. protective function |
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| 12. |
Modified adventitious roots in Banyan tree and Maize plant are known in different names 1. Which are they? 2. Give its function |
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Answer» 1. Banyan tree – Prop root, Maize plant-Stilt root 2. Mechanical support |
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| 13. |
“Stilt roots are adventitious and give mechanical support’’. How does prop root help the plant? |
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Answer» Support the horizontal branches. |
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| 14. |
Some flowers are called perigynous”. What do you mean by it? |
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Answer» In such flowers ovary is half inferior that means position of ovary comes to the same level of other oral whorls lies. Eg:- plum, rose, and peach |
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| 15. |
A list of some plant parts are given below. Note the morphological modification in each item. 1. Carrot 2. Tapioca 3. Potato 4. Ginger |
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Answer» 1. Carrot – Tap root modification . 2. Tapioca – Adventitious root modification 3. Potato – Underground stem modification 4. Ginger – Underground stem modification |
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| 16. |
Common functions of roots are absorption, fixation and conduction. Besides these, roots perform other functions. Justify this statement with two example. |
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Answer» 1. In addition to absorption, fixation, and conduction, roots perform mechanical support, eg -prop root and stilt root. 2. Some are Breathing roots eg:- Pneumatophore. |
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| 17. |
Differentiate between Hypogynous and Epigynous |
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Answer» 1. In hypogynous flower the position of Gynoecium is superior to all other floral whorls. 2. In epigynous flower the position of Gynoecium is inferior to all other floral whorls. |
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| 18. |
Prepare the flow chart of the clotting of blood using the following statements.a) Thromboplastin converts prothrombin to thrombin. b) Blood flows from the wound.c) Blood clot is formed. d) Thrombin converts fibrinogen to fibrin. e) Tissues degenerate to form the enzyme called thromboplastin. f) The red blood cells and platelets entangle in the fibrin network. |
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Answer» d) Thrombin converts fibrinogen to fibrin. a) Thromboplastin converts prothrombin to thrombin. c) Blood clot is formed. f) The red blood cells and platelets entangle in the fibrin network. e) Tissues degenerate to form the enzyme called thromboplastin. b) Blood flows from the wound. |
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| 19. |
In the alimentarty canal of Human :-A. Anterior opening is well developed while posterior opening is Reduced.B. Anterior opening is well developed but posterior opening is absent.C. Posterior opening is well developed but anterior opening is absent.D. Both anterior and posterior openings are well developed. |
| Answer» Correct Answer - A | |
| 20. |
Human being forms two sets of teeth during life, a set of _____teeth replaced by a set of _____teeth. Correct options in the blanks are -A. Milky , DeciduousB. Permanent , MilkyC. Deciduous , AdultD. Temporary , Milky |
| Answer» Correct Answer - A | |
| 21. |
Write any two members of the Phylum Aschelminthes which are found parasitic on Human beings. |
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Answer» 1. Ascaris (Roundworm) 2. Wuchereria (Filaria worm) |
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| 22. |
Which of the following features is used to identify a male cockroach from a female cockroach?A. Forewings with darker tegminaB. Presence of caudal stylesC. Presence of a boat shaped sternum on the 9th abdominal segmentD. Presence of anal cerci |
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Answer» Correct Answer - B In male cockroach, the `9^(th)` sternite bears a pair of small and spine-like unjolnted caudal or anal styles which are absent in female cockroach. The anal styles are believed to function as motion detector. Besides this, the other three characters, i.e. anal cerci, boat-shaped sternum on `9^(th)` abdominal segment and forewings with darker tegmina are found in both male and female cockroaches. |
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| 23. |
Which of the following animals does not undergo metamorphosis ?A. MothB. TunicateC. EarthwormD. Starfish |
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Answer» Correct Answer - C All the given animals except earthworm undergoes metamorphosis. Earthworrn exchibits direct development where no larval stage is involved. Metamorphosis is usually seen in animals exhibiting indirect deveļopment, involving a larval stage which later transformed into an adult. Larval form of moth is caterpillar and that of tunicates is tadpole. In starfish, bipinneria larva occurs. |
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| 24. |
Which of the following organisms are known as chief producers in the oceans ?A. CyanobacteriaB. DiatomsC. DinoflagellatesD. Euglenoids |
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Answer» Correct Answer - B Diatoms are chief producers in the oceans and they contribute 40% of marine primary productivity. They constitute a major group of unicellular eukaryotic microalgae and are among the most common types of phytoplanktons. The other given organisms also exhibit autotrophic mode of nutrition. |
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| 25. |
Three friends Mani, Adil and Ronney met at a marriage party,. Mani and Ronney wanted to drink and compelled Adil who has never had a drink before. Adil is in dilemma. On the one hand he does not want to lose his friendship but on the other hand he is conscious that nobody in his family drinks. a. What would you have done if you were in place of Adil ? b. Write 2 harmful effects of alcohol on health. c. How can one prevent and control alcohol addiction. |
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Answer» I will deny in having drink in an assertive way to maintain the friendship. Any 2 harmful effects; a. Affects nervous system b. Peptic ulcer c. Hepatitis Prevention and control a. Avoid undue peer pressure b. Seeking help from parents |
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| 26. |
Which of the following statements are true? If false, correct them:(a) Boron deficiency leads to stout axis.(b) Every mineral element that is present in a cell is needed by the cell.(c) Nitrogen as a nutrient element, is highly immobile in the plants.(d) It is very easy to establish the essentiality of micronutrients because they are required only in trace quantities. |
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Answer» (a) True |
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| 27. |
State the location and function of the following cells (a) Serotoli cells (b) Leydig cells |
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Answer» Serotoli cell- inside the seminiferous tubule, nourishment of sperm Leydig cell- interstitial space in between seminiferous tubule- androgen secretion |
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| 28. |
What is DNA replication in prokaryotes called? Why? |
| Answer» DNA replication in prokaryotes is called theta `(theta)` replication because this DNA is circular in shape. | |
| 29. |
What is the function of RNA primer during protein synthesis? |
| Answer» RNA primer attracts the complementary nucleotides from the surrounding nucleoplasm and helps in building new complimentary strand of m-RNA. | |
| 30. |
What are mullatoes? |
| Answer» Mullatoes are the progenies between negro and white. | |
| 31. |
Which inheritance was described by Davenport and Davenport? |
| Answer» The inheritance of skin colour in human beings was described by Davenport and Davenport. | |
| 32. |
What is a lethal gene? |
| Answer» The gene which causes the death of the bearer is called lethal gene. | |
| 33. |
Who coined the term genetics? |
| Answer» The term genetics was coined by William Bateson in 1906. | |
| 34. |
Foregut is lined internally by a. Peritrophic membrane b. Epithelial membrane c. Intima d. Taenidia |
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Answer» Foregut is lined internally by Intima. |
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| 35. |
The origin of foregut is a. Ectodermal b. Mesodermal c. Endodermal d. None of these |
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Answer» The origin of foregut is Ectodermal. |
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| 36. |
Bamboo species flower- (a) Only once in life time (b) Once in 12 years (c) Every year (d) Twice in 50-100 years |
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Answer» Bamboo species flower is Only once in life time. |
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| 37. |
What is the lifespan of platelets?(a) 1 – 7 days(b) 8 – 12 days(c) 14 days(d) 1 month |
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Answer» Correct choice is (b) 8 – 12 days Easy explanation: Platelets are formed from the megakaryocyes. Thus, essentially, they are broken parts of a cell and thus must be removed eventually to avoid any problems to the body. Thus, within 8 – 12 days, the liver removes them from blood circulation. |
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| 38. |
Which of them is a neurological disorder which is expressed muscularly?(a) Paralysis(b) Muscular Dystrophy(c) Dementia(d) Alzheimer’s |
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Answer» Right choice is (a) Paralysis For explanation: In paralysis, the muscles are functioning normally but the nerves are unable to conduct the impulses. If the neurons are not treated, the muscles lose their tone over time and become stiff. In that situation, the muscles have also been damaged. |
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| 39. |
Which electrode can be used to pick up signals from individual fibers of muscle tissues?(a) biopolar needle electrode(b) concentric core needle electrode(c) multi-element needle electrode(d) monopolar needle electrode |
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Answer» Correct option is (c) multi-element needle electrode Easiest explanation: Multi-element needle electrodes are used to pick up the signals from individual fibers of muscle tissue. Special needles are available using 25-micron diameter electrode surfaces. They have up to 14 pickup surfaces down the side of one needle. |
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| 40. |
TT x tt is– (a) Reciprocal cross (b) Hybridization (d) Test cross (d) Back cross |
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Answer» TT x tt is test cross. |
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| 41. |
Other name for condylar joint is ___________(a) Saddle joint(b) Plain joint(c) Ball and Socket Joint(d) Hinge Joint |
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Answer» The correct option is (d) Hinge Joint Easy explanation: Condyle stands for a rounded articular surface on the extremity of bone where it forms a joint with another bone. This allows limited movements like extension and flexion. Since the movements are limited and possible in only one direction, i.e. uniaxial, it is also called a hinge joint. |
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| 42. |
Label the diagram.(a) 1 – Periosteum, 2 – Fibrous Capsule, 3 – Hyaline Cartilage, 4 – Synovial Cavity, 5 – Synovial Capsule(b) 1 – Hyaline Cartilage, 2 – Fibrous Capsule, 3 – Synovial Cavity, 4 – Periosteum, 5 – Synovial Capsule(c) 1 – Hyaline Cartilage, 2 – Fibrous Capsule, 3 – Periosteum, 4 – Synovial Cavity, 5 – Synovial Capsule(d) 1 – Periosteum, 2 – Fibrous Capsule, 3 – Synovial Cavity, 4 – Hyaline Cartilage, 5 – Synovial Capsule |
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Answer» Right option is (a) 1 – Periosteum, 2 – Fibrous Capsule, 3 – Hyaline Cartilage, 4 – Synovial Cavity, 5 – Synovial Capsule Easy explanation: The following diagram is that of a freely moving joint or the synovial joint. The Synovial Joint is held together by ligaments. It has a synovial capsule and is surrounded by fiberous capsule. The synovial fluid is filled in the synovial capsule to help reduce friction. The hyaline cartilage at the moving parts also helps reduce wear and tear of the bones. |
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| 43. |
Identify which one of the following is a test cross. (i) `Tt xx Tt` (ii) `TT xx tt` (iii) `Tt xx tt` |
| Answer» `Tt xx tt` is the test cross | |
| 44. |
What is codominance? |
| Answer» When both the genes of an allelomorphic pair express themselves equally in `F_(1)` hybrids, then that dominance is called codominance. | |
| 45. |
The law of dominance is not universally applicable. |
| Answer» The law of independent assortment of Mendelian genetics is not universally applicable/ | |
| 46. |
The contraction of the skeletal muscles results in the generation of action potential in the individual muscle fibers. Record of this action potential is called ______________(a) ECG(b) EMG(c) EEG(d) EKG |
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Answer» Right choice is (b) EMG Easiest explanation: The contraction of the skeletal muscles results in the generation of action potential in the individual muscle fibers, a record of such action potential is known as electromyogram (EMG). The activity is similar to that observed in the cardiac muscles (ECG or EKG), but in the skeletal muscles, repolarization takes place much more rapidly. The action potential lasts for only few milliseconds. |
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| 47. |
Genotypic ratio of dihybrid cross is: |
| Answer» `1 : 1 : 2 : 2 : 4 : 2 : 2 : 1 : 1` | |
| 48. |
What is a neuro-muscular disorder?(a) The nerves are damaged so they do not give proper impulses to the muscles(b) The muscles are damaged and so they are not able to act according to the impulses given by the nerves(c) The nerves are damaged so they do not give proper impulses to the muscles or the muscles are damaged and so they are not able to act according to the impulses given by the nerves(d) Nerves and muscles are both damaged |
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Answer» Correct choice is (c) The nerves are damaged so they do not give proper impulses to the muscles or the muscles are damaged and so they are not able to act according to the impulses given by the nerves Explanation: Neuro-muscular disorders are those in which either the neurons or the skeletal muscles have faced some sort of injury or damage and the effect of that is seen in the skeletal muscles or neurons. For eg, the nerve is able to conduct impulses but due to damaged skeletal muscles, they are not able to respond to the impulses. |
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| 49. |
Angioplasty is done for __________(a) testing blood pressure(b) opening the blockages in blood vessels(c) suturing the blood vessels(d) detecting plaque |
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Answer» Correct choice is (b) opening the blockages in blood vessels To explain: Angioplasty, also known as balloon angioplasty is a process by which the blockages in the blood vessels are opened. Blockages are due to the deposition of plaque and they reduce the blood flow. Thus, the vessels narrow out and cause blockages which need to be removed. For this process, a catheter is inserted followed by a balloon catheter. Once the balloon is in place, it is inflated and the plaque and the capillary walls are pushed aside, opening the blockage. |
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| 50. |
Which instrument is used to listen to the Korotkoff sounds?(a) Stethoscope(b) Pneumotachometer(c) Piezoelectric Microphone(d) Sphygmomanometer |
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Answer» The correct option is (c) Piezoelectric Microphone Easiest explanation: Korotkoff sounds are heard while BP is measured using a cuff. The microphone is placed on the brachial artery, near the inner side of the elbow (antecubital fossa). The cuff is inflated to a [reset pressure level, around up to 30mmHg/s. The pressure is then released at around 3 – 5 mmHg/s. When the air is leaking out, Korotkoff sounds are heard. When the first Korotkoff sound (systolic) is heard, the system starts recording and when the last Korotkoff sound (diastolic) is heard, the system stops recording. The cuff gets completely deflated with 2 – 3 seconds after the last sound is heard. |
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