Is lead metal or nonmetal?
Lead is a chemical element with the symbol Pb. It is a heavy metal. Lead is soft and malleable, and... View Article
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Give 15 examples of combustible substances
Those substances which can burn are called combustible substances. For Example: Cloth, straw, cooking gas, kerosene oil, coal, charcoal, w... View Article
Why is the ripening of fruits considered a chemical change?
Ripening of fruits, such as banana, is a chemical change . A number of changes take place during the ripening... View Article
What is the difference between 2H and H2?
When two molecules of hydrogen combine, H2 is formed. H2 is molecular hydrogen. It is bonded together by one single... View Article
What is the difference between apocarpous and syncarpous ovary?
Answer: The gynoecium is the female reproductive organ and the last whorl of the flower. It is composed of pistils... View Article
Name any cell organelle which is non-membranous.
Non – membranous organelles are not surrounded by a membrane such as Ribosomes and centrosomes, Membranous organelles are surrounded by... View Article
Give examples of chasmogamous flowers?
Chasmogamous flowers are open flowers having exposed anthers and stigma. Chasmogamous flowers open at maturity. Lamium amplexicaule produces both cleistogamous... View Article
In cockroaches, air enters the body through a) lungs b) gills c) spiracles d) skin
In cockroaches, air enters the body through (iii) spiracles. Spiracles are breathing openings found on the surface of insects ,... View Article
What is the mode of nutrition of plasmodium and fungi?
Fungi get their nutrition by absorbing organic compounds from the environment. They are saprophytic. Fungi are heterotrophic Fungi feed on... View Article
What is strip cropping?
Strip cropping is a practice of growing field crops in narrow strips either at right angles to the direction of... View Article
What are the desirable agronomic characteristics for crop improvement?
Crop variety improvement is the primary step to improving food crop production. It helps in the development of crops with desired... View Article
Name the functional unit of DNA that carries genetic information
DNA (or deoxyribonucleic acid) is the molecule that carries the genetic information in all cellular forms of life and some... View Article
The exit of unabsorbed food material is regulated by (a) liver (b) anus (c) small intestine (d) anal sphincter
Anal sphincter regulates the unabsorbed food , which releases it in small amounts into the small intestine. The exit of... View Article
What is pycnoxylic and manoxylic wood?
Manoxylic wood is a type of gymnosperm wood has the low number of xylem cells in them. It has non-compacted... View Article
Which Kharif crop is used for cattle feed? (a) Sugarcane (b) Potato (c) Jowar and bajra (d) Wheat
Jowar is one of the important food and fodder cereal crops cultivated across India, Sorghum popularly known as “Jowar” in... View Article
Why do boiled seeds fail to sprout?
The boiled seeds failed to sprout because boiling denatures or damages certain enzymes or proteins that are required for germination.... View Article
Xylem and phloem are examples of a) Epidermal tissue b) Complex tissue c) Protective tissue d) Simple tissue
Xylem and phloem are examples of complex tisssue. Xylem is vascular tissue that transports water and dissolved minerals from roots... View Article
What is the full form of SER in biology?
SER stand for Smooth Endoplasmic Reticulum. SER is a membrane-bound network of tubules which function as the synthesis of lipids... View Article
What is the storage sac of a cell?
Vacuoles are the membrane-bound organelle filled with water containing inorganic and organic molecules. A storage sac for solids and liquids... View Article
What is floral primordium?
Floral primordia referred to the formation of little buds at the end of stems from which flower will develop. Primordium... View Article
