Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development and evolution.
Q. In which of the following plants, you can find Leghemoglobin ?
⇒ Leghemoglobin from soybean is an oxygen carrier and hemoprotein found in the nitrogen-fixing root nodules of leguminous plants. It is produced by these plants in response to the roots being colonized by nitrogen-fixing bacteria, termed rhizobia, as part of the symbiotic interaction between plant and bacterium.
Q. Which of the following is the source of adult human stem cell?
Ans: Bone Marrow
⇒ There are two types of adult stem cells. One type comes from fully developed tissues, like the brain, skin, and bone marrow. There are only small numbers of stem cells in these tissues, and they are more likely to generate only certain types of cells.
Q. Amflora is a genetically modified ______?
⇒ Amflora is a genetically modified potato cultivar developed by BASF Plant Science. “Amflora” potato plants produce pure amylopectin starch that is processed to waxy potato starch. It was approved for industrial applications in the European Union on 2 March 2010 by the European Commission.
Q. Which plants is used as Green Manure?
⇒ Crotalaria juncea (sunhemp) and Alhagi camelorum belong to the family Fabaceae or Papilionaceae and are among the plants, which are used as green manure in sandy soils. Crotalaria juncea is a source of green manure and lignified fiber is obtained from its stem.
Q. Ripening of fruits is because of which among the following plant hormones?
⇒ Ethylene is the plant hormone that helps in the ripening of fruits. It is responsible for the changes in texture, color, softness, and taste of the fruit as it ripens, Ethylene accelerates the fruit ripening process.
Q. Which acid is present in lemon?
Ans: Citric acid
⇒ Organic Acids in Lemon Juice. The main organic acids contained in the flesh of lemons are citric acid and malic acid. The sourness of citrus fruit is the taste of citric acid. Citric acid was first isolated in 1784 by the chemist Carl Wilhelm Scheele, who crystallized it from lemon juice.
Q. Which is aromatic dried flower buds of a tree?
⇒ Cloves are the aromatic flower buds of a tree in the family Myrtaceae, Syzygium aromaticum. They are native to the Maluku Islands (or Moluccas) in Indonesia, and are commonly used as a spice.
Q. The pitcher plant is characterized by which type of plants?
⇒ Pitcher plants are several different carnivorous plants which have modified leaves known as pitfall traps—a prey-trapping mechanism featuring a deep cavity filled with digestive liquid. The traps of what are considered to be “true” pitcher plants are formed by specialized leaves.
Q. How many arteries are present in Human Umbilical Cord?
⇒ The umbilical artery is a paired artery that is found in the abdominal and pelvic regions. In the fetus, it extends into the umbilical cord.
Q. Which of the plant growth hormone was recognized by Japanese scientists?
⇒ Gibberellins (GAs) are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development, and leaf and fruit senescence. GAs are one of the longest-known classes of plant hormone. In 1926, Japanese scientist Eiichi Kurosawa identified that foolish seedling disease was caused by the fungus.