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MCQOPTIONS
This section includes 1528 Mcqs, each offering curated multiple-choice questions to sharpen your Grade9 knowledge and support exam preparation. Choose a topic below to get started.
| 1351. |
The process of breakdown of water molecules is classified as |
| A. | photosynthesis |
| B. | photolysis |
| C. | electrolysis |
| D. | ultra synthesis |
| Answer» C. electrolysis | |
| 1352. |
The pyruvic acid is changed into acetyl-CoA before entering |
| A. | Krebs cycle |
| B. | Kelvin cycle |
| C. | Melvin cycle |
| D. | Karl cycle |
| Answer» B. Kelvin cycle | |
| 1353. |
The ribose, adenine, and phosphate group in the linear chain are considered as subunits of |
| A. | sodium chloride |
| B. | Adenosine Triphosphate (ATP) molecule |
| C. | amino acids |
| D. | calcium phosphate |
| Answer» C. amino acids | |
| 1354. |
The result of chemical reaction C6H12O6 + 6O2 will be |
| A. | 6CO2 + 6H2O + energy |
| B. | 8CO2 + 5H2O + energy |
| C. | 6CO3 + 6H2O + energy |
| D. | 10H2O + 6N2O + energy |
| Answer» B. 8CO2 + 5H2O + energy | |
| 1355. |
The explanation of observations is classified as |
| A. | reporting |
| B. | experiments |
| C. | hypothesis |
| D. | deductions |
| Answer» D. deductions | |
| 1356. |
A biological problem is a query about |
| A. | mankind |
| B. | life |
| C. | evolution |
| D. | origin |
| Answer» C. evolution | |
| 1357. |
A standard by which a scientist compares his result is known as |
| A. | data |
| B. | control |
| C. | variable |
| D. | query |
| Answer» C. variable | |
| 1358. |
The scientific method in which the biological problems are solved is classified as |
| A. | chemical method |
| B. | biological method |
| C. | qualitative method |
| D. | quantitative method |
| Answer» C. qualitative method | |
| 1359. |
The scientist who proposed the system of binomial nomenclature was |
| A. | Andrea Caesalpino |
| B. | Augustus Rivinus |
| C. | Tournefort |
| D. | Carolus Linnaeus |
| Answer» E. | |
| 1360. |
The 'Asterias Rubens' is a scientific name which is used for |
| A. | star fish |
| B. | whale fish |
| C. | shark fish |
| D. | jelly fish |
| Answer» B. whale fish | |
| 1361. |
The example of eukaryotic multicellular heterotrophs is |
| A. | coriander and mint |
| B. | mustard plant |
| C. | mushrooms |
| D. | spinach |
| Answer» D. spinach | |
| 1362. |
The example of an organism which possesses animal-like as well as plant-like characteristics is |
| A. | Volvox |
| B. | Paramecium |
| C. | Euglena |
| D. | Amoeba |
| Answer» D. Amoeba | |
| 1363. |
A bird about 60 cm long, omnivorous eats insects, seeds and small animals are |
| A. | crow |
| B. | sparrow |
| C. | eagle |
| D. | houbara bustard |
| Answer» E. | |
| 1364. |
The major causes of extinction of different species include |
| A. | habitat loss and over-hunting |
| B. | climate change and pollution |
| C. | deforestation |
| D. | all of above |
| Answer» E. | |
| 1365. |
Fungi are heterotrophic and made of |
| A. | nucleus |
| B. | cell wall |
| C. | chitin |
| D. | chlorophyll |
| Answer» D. chlorophyll | |
| 1366. |
Plants are also regarded as |
| A. | flora |
| B. | fauna |
| C. | flower |
| D. | botany |
| Answer» B. fauna | |
| 1367. |
Food is supplied to human due to |
| A. | biodiversity |
| B. | ecosystem |
| C. | food chain |
| D. | diversity |
| Answer» B. ecosystem | |
| 1368. |
The organisms that live on organic materials and absorb organic molecules by digesting enzymes are called |
| A. | decomposers |
| B. | producers |
| C. | carnivores |
| D. | omnivores |
| Answer» B. producers | |
| 1369. |
Zacharias developed first |
| A. | microscope |
| B. | telescope |
| C. | spectroscope |
| D. | optical lens |
| Answer» B. telescope | |
| 1370. |
The process of separation of salts from water through semi-permeable membranes is |
| A. | reverse exocytosis |
| B. | reverse endocytosis |
| C. | reverse diffusion |
| D. | reverse osmosis |
| Answer» E. | |
| 1371. |
The long cells that have pores at the end of walls are called |
| A. | sieve tube cells |
| B. | exocytosis cells |
| C. | endocytosis cells |
| D. | lateral cells |
| Answer» B. exocytosis cells | |
| 1372. |
A thin elastic membrane covering cytoplasm is cell membrane which is present in all |
| A. | prokaryotes only |
| B. | eukaryotes only |
| C. | protists |
| D. | prokaryotes and eukaryotes |
| Answer» E. | |
| 1373. |
The microscope in which beam of electrons is used and the lens is kept in the vacuum chamber is |
| A. | electron microscope |
| B. | proton microscope |
| C. | neutron microscope |
| D. | light microscope |
| Answer» E. | |
| 1374. |
Considering the size of cells, the smallest cells are |
| A. | bacteria |
| B. | nerve cells |
| C. | centrioles |
| D. | nucleoli |
| Answer» B. nerve cells | |
| 1375. |
The Scanning Electron Microscope is used to study |
| A. | shoot system of plants |
| B. | roots of plants |
| C. | structure of cell study |
| D. | internal cell structure |
| Answer» D. internal cell structure | |
| 1376. |
An organism which carries out fermentation is |
| A. | streptococcus pyogenes |
| B. | yeast |
| C. | virus |
| D. | prions |
| Answer» C. virus | |
| 1377. |
How molecules can pass through the cell membranes are |
| A. | endocytosis and exocytosis |
| B. | active transport |
| C. | filtration and osmosis |
| D. | all of above |
| Answer» E. | |
| 1378. |
The sacs that are risen by the inner membrane of plastids are called |
| A. | thylakoids |
| B. | cristae |
| C. | vacuoles |
| D. | chromatins |
| Answer» B. cristae | |
| 1379. |
The size of an object that cannot be resolved by a light microscope is |
| A. | 0.5µm |
| B. | 0.2µm |
| C. | 0.8µm |
| D. | 0.4µm |
| Answer» C. 0.8µm | |
| 1380. |
Considering plant cell, the outer layer is known as |
| A. | compositors wall |
| B. | primary wall |
| C. | secondary wall |
| D. | chitin layer |
| Answer» C. secondary wall | |
| 1381. |
The nervous tissues are composed of |
| A. | electrons |
| B. | neurons |
| C. | protons |
| D. | neutrons |
| Answer» C. protons | |
| 1382. |
The kind of endoplasmic which is involved in lipid metabolism and lacks the ribosomes is called |
| A. | synthetic endoplasmic reticulum |
| B. | lipid endoplasmic reticulum |
| C. | rough endoplasmic reticulum |
| D. | smooth endoplasmic reticulum |
| Answer» E. | |
| 1383. |
The tiny granular structures that float freely in cytoplasm or bound to endoplasmic reticulum is classified as |
| A. | lysosomes |
| B. | ribosomes |
| C. | vacuoles |
| D. | cytoplasm |
| Answer» C. vacuoles | |
| 1384. |
The step of meiosis which generates the genetic variation is classified as |
| A. | meiosis I |
| B. | meiosis II |
| C. | meiosis IV |
| D. | meiosis III |
| Answer» B. meiosis II | |
| 1385. |
The phase of meiosis in which spindle fibers of kinetochore will be shortened is classified as |
| A. | tetra phase I |
| B. | neophase I |
| C. | tropic phase I |
| D. | anaphase I |
| Answer» E. | |
| 1386. |
The phase in which the cell cycle starts after its production is called |
| A. | G2 phase |
| B. | G1 phase |
| C. | G3 phase |
| D. | G4 phase |
| Answer» C. G3 phase | |
| 1387. |
The division of cytoplasm is classified as |
| A. | cytokinesis |
| B. | karyokinesis |
| C. | kinematics |
| D. | osmosis |
| Answer» B. karyokinesis | |
| 1388. |
The examples of cells that remain in G0 phase semi-permanently are cells of |
| A. | kidney and liver |
| B. | heart and lungs |
| C. | arms and legs |
| D. | brain and spinal cords |
| Answer» B. heart and lungs | |
| 1389. |
The separation of sister chromosomes during anaphase II is called |
| A. | non-disjunction |
| B. | disjunction |
| C. | diploid budding |
| D. | haploid budding |
| Answer» C. diploid budding | |
| 1390. |
The apoptosis is more sequential than |
| A. | macro meiosis |
| B. | enzymatic mitosis |
| C. | necrosis |
| D. | micro meiosis |
| Answer» D. micro meiosis | |
| 1391. |
The interphase is followed by |
| A. | meiosis I only |
| B. | meiosis II only |
| C. | meiosis III |
| D. | meiosis I and II |
| Answer» E. | |
| 1392. |
The karyokinesis is also known as division of |
| A. | centrioles |
| B. | nucleus |
| C. | chromosomes |
| D. | nucleotides |
| Answer» C. chromosomes | |
| 1393. |
The short period of the phase of the cell cycle is |
| A. | exocytosis phase |
| B. | endocytosis phase |
| C. | mitotic phase |
| D. | meiotic phase |
| Answer» D. meiotic phase | |
| 1394. |
The blood vessels that carry the blood away from the heart are called |
| A. | arteries |
| B. | capillaries |
| C. | pulmonary valves |
| D. | veins |
| Answer» B. capillaries | |
| 1395. |
After entering into the tissues, the arteries are divided into |
| A. | aorta |
| B. | atrium |
| C. | capillaries |
| D. | veins |
| Answer» D. veins | |
| 1396. |
The tissues which are responsible for the transportation of dissolved substances and water to aerial parts from roots are called |
| A. | phloem tissues |
| B. | chlorophyll tissues |
| C. | mesophyll tissues |
| D. | xylem tissues |
| Answer» E. | |
| 1397. |
The society (ISBT) stands for |
| A. | Internal School of Blood Transfusion |
| B. | Internal Society of Blood Transfusion |
| C. | Internal School of Blood Transfer |
| D. | International Society of Blood Transfusion |
| Answer» E. | |
| 1398. |
The normal pH of blood is |
| A. | 2.2 |
| B. | 5.2 |
| C. | 7.4 |
| D. | 10.4 |
| Answer» D. 10.4 | |
| 1399. |
Electron reflects or passes through an object forming |
| A. | image |
| B. | magnitude |
| C. | resolution |
| D. | vacuum |
| Answer» B. magnitude | |
| 1400. |
The types of support tissues include |
| A. | sclerenchyma tissues only |
| B. | collenchyma tissues only |
| C. | parenchyma tissues |
| D. | sclerenchyma and collenchyma tissues |
| Answer» E. | |