Biology MCQs

Notes:
The clavicle or collarbone is a long bone that serves as a strut between the shoulder blade and the sternum or breastbone. There are two clavicles, one on the left and one on the right. The clavicle is the only long bone in the body that lies horizontally.
The patella, also known as the kneecap, is a flat, circular-triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint.
The scapula, or shoulder blade, is a large triangular-shaped bone that lies in the upper back.
The sternum or breastbone is a long flat bone located in the central part of the chest. It connects to the ribs via cartilage and forms the front of the rib cage, thus helping to protect the heart, lungs, and major blood vessels from injury.

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Cod liver oils from fish are rich in vitamins A and D and hence these are recommended for the chikdren to prevent the rickets(bone deformation).

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Omicron has some deletions and more than 30 mutations, several of which overlap with those in the alpha, beta, gamma, or delta VoCs. These deletions and mutations are known to lead to increased transmissibility, higher viral binding affinity, and higher antibody escape. Some of the other omicron mutations with known effects confer increased transmissibility and affect binding affinity. Although omicron is likely to be highly transmissible, it is not yet clear whether it has greater transmissibility than delta.

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Conifers (gymnosperms) are adapted to tolerate extreme environmental conditions due to their dense cuticle, sunken stomata and needle-like leaves.

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Mycoplasma is a genus of bacteria that do not have a cell wall surrounding the cell membrane.

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Bryophytes are found in mosses and liverworts, in which the gametophyte is the major life stage, while in angiosperms and gymnosperms, the sporophyte is predominant.

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A condition in which the stamens are attached to the petals of a flower instead of directly attached to the thalamus is called Epipetalous. Solanum is an example of Epipetalous.

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During photosynthesis, plants take in carbon dioxide, water, and sunlight and release oxygen. Photosynthesis occurs in Chloroplasts in presence of chlorophyll pigment.

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Food in plants is prepared in leaves, all the essential components and raw materials like water, carbon dioxide, minerals reach to leaves. Leaves are also known as food factories in plants.

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Pollination where the transfer of pollen between anthers and stigmas of different flowers of the same plant or different plants of the same species is called Cross-Pollination.