MCQOPTIONS
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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.
| 501. |
The particles formed by covalent or ionic bonding are called |
| A. | mitochondrion molecule |
| B. | micro molecule |
| C. | bio-molecule |
| D. | macromolecule |
| Answer» D. macromolecule | |
| 502. |
Unicellular organisms live their own life with in a |
| A. | community |
| B. | population |
| C. | colony |
| D. | all of above |
| Answer» D. all of above | |
| 503. |
The example of bio economic is |
| A. | analysis of data |
| B. | collection of data |
| C. | cost value of yield of crops |
| D. | none of above |
| Answer» D. none of above | |
| 504. |
Kingdom Plantae and Kingdom Animalia belong to the system of classification which is |
| A. | new |
| B. | oldest |
| C. | archaic |
| D. | historian |
| Answer» C. archaic | |
| 505. |
In developing countries the number of people relying on wood for cooking and heating is |
| A. | 1 billion |
| B. | 3billion |
| C. | 2 billion |
| D. | 4 billion |
| Answer» C. 2 billion | |
| 506. |
The infectious particles made up of proteins only and can cause diseases in certain plants are called |
| A. | chitin ions |
| B. | amino acid ions |
| C. | ions |
| D. | prions |
| Answer» E. | |
| 507. |
The name of the class to which humans belongs is |
| A. | microcoryphia |
| B. | Mammalia |
| C. | magnoliopsida |
| D. | megaloptera |
| Answer» C. magnoliopsida | |
| 508. |
The branch of biology which deals with classification and also traces the history of evolution is known as |
| A. | taxonomy |
| B. | systematics |
| C. | bioinformatics |
| D. | evolution |
| Answer» C. bioinformatics | |
| 509. |
The name of the phylum to which humans belongs is |
| A. | coleoptera |
| B. | collembola |
| C. | chordata |
| D. | chytridimycota |
| Answer» D. chytridimycota | |
| 510. |
In the binomial nomenclature, the first name represents |
| A. | class |
| B. | phylum |
| C. | species |
| D. | genus |
| Answer» E. | |
| 511. |
Mineral, vegetables, and animals were introduced by |
| A. | Carolus Linnaeus |
| B. | Levered |
| C. | Thomas |
| D. | Edison |
| Answer» B. Levered | |
| 512. |
Pea is classified as the part of the kingdom |
| A. | pisum |
| B. | p. sativa |
| C. | Plantae |
| D. | fabales |
| Answer» D. fabales | |
| 513. |
The five-kingdom classification is based on principle mode of |
| A. | nutrition |
| B. | reproduction |
| C. | respiration |
| D. | growth |
| Answer» B. reproduction | |
| 514. |
The two carbon compound in which pyruvic acid is changed is called |
| A. | methane-CoA |
| B. | ethyl-CoA |
| C. | methyl-CoA |
| D. | acetyl-CoA |
| Answer» E. | |
| 515. |
The pigments other than chlorophyll-a present in the thylakoid membranes of chloroplasts are known as |
| A. | synthetic pigments |
| B. | catabolic pigments |
| C. | accessory pigments |
| D. | necessary pigments |
| Answer» D. necessary pigments | |
| 516. |
The biologist who discovered the ATP is |
| A. | Daniel Olive |
| B. | Daniel Koshland |
| C. | Karl Lohmann |
| D. | Emil August |
| Answer» D. Emil August | |
| 517. |
The lactic acid fermentation occurs in |
| A. | meristematic tissues |
| B. | skeletal muscles |
| C. | epidermal tissues |
| D. | xylem tissues |
| Answer» C. epidermal tissues | |
| 518. |
The reactions in second phase of photosynthesis that does not utilize light directly are called |
| A. | adenine reactions |
| B. | night reactions |
| C. | light reactions |
| D. | dark reactions |
| Answer» E. | |
| 519. |
The thalassemia is also known as |
| A. | Ernst's anemia |
| B. | Camillo's anemia |
| C. | Karl's anemia |
| D. | Cooley's anemia |
| Answer» E. | |
| 520. |
The evaporated water is carried away from leaves by the |
| A. | temperature |
| B. | presence of nitrogen |
| C. | movement of air |
| D. | humidity of air |
| Answer» D. humidity of air | |
| 521. |
The function of platelets is |
| A. | clotting of blood |
| B. | prevention of clotting of blood |
| C. | absorption of oxygen |
| D. | absorption of water |
| Answer» B. prevention of clotting of blood | |
| 522. |
The term used for hardening of arteries is known as |
| A. | hepatic disorders |
| B. | vena cava disorders |
| C. | arteriosclerosis |
| D. | atherosclerosis |
| Answer» D. atherosclerosis | |
| 523. |
The valve which prevents the blood backflow to left ventricle from aorta is classified as |
| A. | pulmonary tricuspid valve |
| B. | aortic bicuspid valve |
| C. | pulmonary semi lunar valve |
| D. | aortic semi lunar valve |
| Answer» E. | |
| 524. |
All the organisms share many biological |
| A. | habitat |
| B. | characteristics |
| C. | factors |
| D. | regions |
| Answer» C. factors | |
| 525. |
The change in climate causes species difficulty in |
| A. | adjustment |
| B. | migration |
| C. | extinction |
| D. | reproduction |
| Answer» B. migration | |
| 526. |
Prions and viroid's are |
| A. | unicellular |
| B. | multicellular |
| C. | acellular |
| D. | bicellular |
| Answer» D. bicellular | |
| 527. |
The name of biologist who objected two-kingdom classification and proposed a third kingdom is |
| A. | Rachel Carson |
| B. | Ernst Haeckel |
| C. | David Baltimore |
| D. | James Watson |
| Answer» C. David Baltimore | |
| 528. |
The basic unit of classification is a |
| A. | specie |
| B. | family |
| C. | community |
| D. | population |
| Answer» B. family | |
| 529. |
The name of the scientist who proposed extension of cell theory is |
| A. | Robert Bentley |
| B. | Rudolf Virchow |
| C. | David Bellamy |
| D. | Thomas Bell |
| Answer» C. David Bellamy | |
| 530. |
The meristematic tissues and permanent tissues are types of |
| A. | endoplasmic tissues |
| B. | phloem tissues |
| C. | simple tissues |
| D. | xylem tissues |
| Answer» D. xylem tissues | |
| 531. |
The scientist Mathias Schleiden studied plant tissues in |
| A. | 1838 |
| B. | 1849 |
| C. | 1865 |
| D. | 1879 |
| Answer» B. 1849 | |
| 532. |
The cells that have thick walls for the conduction of support and water are |
| A. | meiotic cells |
| B. | xylem cells |
| C. | passive cells |
| D. | nerve cells |
| Answer» C. passive cells | |
| 533. |
The diameter range of cells is |
| A. | 0.1µm to 2.0µm |
| B. | 0.1µm to 1.0µm |
| C. | 0.2µm to 2.5µm |
| D. | 0.3µm to 10.0µm |
| Answer» C. 0.2µm to 2.5µm | |
| 534. |
Mostly bacteria and protists are |
| A. | unicellular |
| B. | multicellular |
| C. | lacking mitochondria |
| D. | prokaryotes |
| Answer» B. multicellular | |
| 535. |
The two major issues that are present in the structure of the stomach are |
| A. | nerve and spinal tissues |
| B. | molecular and glandular tissues |
| C. | muscular and epithelial tissues |
| D. | macro and micro tissues |
| Answer» D. macro and micro tissues | |
| 536. |
The major organs of the digestive system include |
| A. | small and large intestine |
| B. | stomach and oral cavity |
| C. | pancreas and liver |
| D. | all of above |
| Answer» E. | |
| 537. |
The agriculture branch which is concerned with breeding and care of domestic animals is classified as |
| A. | animal husbandry |
| B. | horticulture |
| C. | forestry |
| D. | biotechnology |
| Answer» B. horticulture | |
| 538. |
The smallest unit of life is called a |
| A. | tissue |
| B. | organelle |
| C. | cell |
| D. | organ system |
| Answer» D. organ system | |
| 539. |
Ornamental fruits and plants are studies of a |
| A. | horticulturist |
| B. | agriculturist |
| C. | florist |
| D. | farmer |
| Answer» B. agriculturist | |
| 540. |
Mitochondria perform the function for the cell is |
| A. | cellular respiration |
| B. | protein synthesis |
| C. | immunization |
| D. | invasion |
| Answer» B. protein synthesis | |
| 541. |
The study of diagnosis and treatment of diseases of livestock is done in |
| A. | farming |
| B. | agriculture |
| C. | animal husbandry |
| D. | fisheries |
| Answer» D. fisheries | |
| 542. |
The microscopic study of tissues is termed as |
| A. | morphology |
| B. | microbiology |
| C. | histology |
| D. | biotechnology |
| Answer» D. biotechnology | |
| 543. |
The famous work of Jabir Bin Hayan includes |
| A. | detail study on animals |
| B. | experimental investigation in chemistry |
| C. | study on medicine |
| D. | atomic model postulation |
| Answer» C. study on medicine | |
| 544. |
The factors that affect electrons on being an energy source are |
| A. | arrangement of atoms only |
| B. | location only |
| C. | arrangement of molecules |
| D. | arrangement of atoms and location |
| Answer» E. | |
| 545. |
In the comparison of photosynthesis, the site for respiration is |
| A. | centrosome |
| B. | ribosomes |
| C. | mitochondria |
| D. | chromosomes |
| Answer» D. chromosomes | |
| 546. |
The molecules of carbon dioxide are combined with five carbon compounds for the formation of six carbon |
| A. | neutrons |
| B. | protons |
| C. | electrons |
| D. | compounds |
| Answer» E. | |
| 547. |
The second phase of photosynthesis in which carbon dioxide is reduced to make |
| A. | oxygen |
| B. | glucose |
| C. | adenine |
| D. | ribose |
| Answer» C. adenine | |
| 548. |
In the comparison of respiration, the chloroplasts are considered as a site for |
| A. | diffusion |
| B. | photosynthesis |
| C. | osmosis |
| D. | respiration |
| Answer» C. osmosis | |
| 549. |
The incorporation or conversion of simple food into complex materials constituting the body is called |
| A. | absorption |
| B. | digestion |
| C. | assimilation |
| D. | dissimilation |
| Answer» D. dissimilation | |
| 550. |
The increased ratio of chemical nutrients in the ecosystem is classified as |
| A. | triplication |
| B. | eutrophication |
| C. | crystallization |
| D. | distillation |
| Answer» C. crystallization | |