811. Cattle quickly swallow grass and store it in their __________.
1. Rumen
2. Esophagus
3. Small intestine
4. Salivary glands
Option “1” is correct When the cow first eats, it chews the food just enough to swallow it. The unchewed food travels to the first two stomachs, the rumen and the reticulum, where it is stored until later.
812. Which of the following carries oxygen to various parts of human body?
1. Red blood cells
2. White blood cells
3. Plasma
4. Nerves
Option “1” is correct
Hemoglobin is the protein inside red blood cells that carries oxygen. Red blood cells also remove carbon dioxide from our body, transporting it to the lungs to exhale.
813. Locked jaw disorder is the other name of the disease –
Option “1” is correct Tetanus, commonly called locked jaw, is a bacterial disease that affects the nervous system.Locked jaw syndrome is a disorder that is related to our jaw joint. It causes severe pain and sometimes cannot open the mouth.
814. Which of the following is known a body builder?
1. Protein
2. Carbohydrates
3. Vitamins
4. Fats
Option “1” is correct Proteins are large biological molecules consisting of one or more chains of amino acids, are essential nutrients for the human body. They are one of the building blocks of body tissue, and can also serve as a fuel source.
815. Bamboo is classified as-
1. Herb
2. Grass
3. Shrub
4. None of these
Option “2” is correct
Bamboo is a type of Grass.
816. Which of the following helps us in protecting from infection?
1. R.B.C.
2. W.B.C.
3. Blood plasma
4. Hemoglobin
Option “2” is correct White blood corpuscles (WBCs) are disease-fighting cells found in blood. When our blood in infected by any harmful bacteria or virus at any in the body, white bloods corpuscles reaches there and eats up or destroys these harmful outsiders.
817. The most abundant element found in the human body is-
1. Iron
2. Sodium
3. Oxygen
4. Iodine
Option “3” is correct
Nearly 99% of the mass of human body consists of just six chemical elements: oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus. Oxygen is the most abundant element in the human body. It is mainly found in the form of water.
818. What is the name of a group of similar cells performing a specific function?
1. Tissue
2. Organ
3. Organ system
4. Cellular organization
Option “1” is correct A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.
819. Plant tissues are of how many types?
1. 3
2. 2
3. 5
4. 6
Option “1” is correct
Plant tissues are categorized broadly into three tissue systems: the epidermis, the ground tissue, and the vascular tissue.
820. Red rot is a disease caused to which of the following plant?
1. Paddy
2. Sugarcane
3. Mustard
4. Wheat
Option “3” is correct Red rot is a disease caused to Sugarcane. Red rot is one of the major constraints in the profitable cultivation of sugarcane in many states of India. It is caused by the fungus Glomerella tucumanensis.
