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  • 2 answers

Yug Borana 17 minutes ago

ORGANISMS WHICH ARE NOT ABLE TO MAKE THEIR FOOD AND DEPENDS ON PLANTS AND ANIMALS FOR FOOD.EXAMPLE-HUMANS,TIGER,ETC.
Organisms which cannot makes it's own food, they depend on other organisms for food . Examples:- all non green plants.
  • 2 answers

Gaurav Seth 30 minutes ago

Normal range of breathing rate per minute in an average adult person at rest is 15–18

This means on an average, an adult human being breathes in and out 15–18 times in a minute.

8 to 16 breaths per minute.
  • 1 answers

Gaurav Seth 52 minutes ago

Pure acids in the liquid state are exceedingly poor conductors of electricity. The fact that aqueous solutions of acids conduct electricity is definite evidence of the existence of ions in these solutions. Acids undergo dissociation in aqueous solution to form H+ ions.

When electricity is passed through an aqueous solution of an acid, the H+ ions reach the cathode and each H+ ion picks up one electron from the cathode to form H2 gas. Because of this reaction, an aqueous solution of acid conducts electricity.

HCl(aq) → H+(aq) + Cl(aq)

  • 3 answers
Yes, full evolution part is deleted.

Gaurav Seth an hour ago

HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.

Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.

The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.

Deleted syllabus of CBSE Class 10 Science

 

 

Yes, all part related to evolution is deleted. If you want you can check sanjiv sir's video in YouTube , channel name edumantra regarding deleted syllabus of science.
  • 3 answers

Anika Khatun 45 minutes ago

Leeuwenhoek discovered  the free living cells

Swati Priya 2 hours ago

Leeuwenhoek

Yogita Ingle 2 hours ago

Leeuwenhoek discovered the free living cells in pond water for the first time. In the year 1674, with the help of improved microscope.

  • 2 answers

Giriraj Singh 2 hours ago

Ocjxuc

Gaurav Seth 14 hours ago

Reflection Refraction
This phenomenon usually occurs in mirrors. This phenomenon usually occurs in Lenses.
Reflection can simply be defined as the reflection of light when it strikes the medium on a plane. Refraction can be defined as the process of the shift of light when it passes through a medium leading to the bending of light.
The light entering the medium returns to the same direction. The light entering the medium travels from one medium to another.
Considering the light waves, they bounce from the plane and change direction. The light waves pass through the surface while simultaneously change from medium to medium.
The angle of incidence of the light is equal to the angle of reflection. The angle of incidence is not equal to the angle of reflection.
  • 2 answers

Harsh Kumar Rai 15 hours ago

Orested was scientist who show the relation between electricity and magnetism

Yogita Ingle 15 hours ago

Oersted showed that electricity and magnetism are related to each other.His research later used in radio, television etc.
The unit of magnetic field strength is named Oersted in his honour.

  • 2 answers

Gopal Roy 20 hours ago

Seeds contains embryo which develops into a seedling when grown under optimum conditions. The endosperm inside the seeds helps in the growth and development of the embryo. It has starch as stored nutrition which allows the rapid growth of embryo. It also stores oil. So, the correct answer is option A.

Yogita Ingle 23 hours ago

The seed contains the future plant or embryo which develops into seedling under appropriate conditions .

  • 1 answers

Vanshu Kharb 1 day ago

Ohm law states that the current flowing in the circuit is directly propotional to the potential difference and inversely proportional to the resistance.
  • 2 answers

Ni Nanthi 1 day ago

Thank you

Yogita Ingle 1 day ago

Binary fission

Multiple fission

1. Forms two daughter individuals

1. Forms many daughter individuals

2. Divides only once

2. Divides repeatedly

3. No residue is left

3. Residue is left

4. Takes place in favourable conditions

4. Takes place in favourable as well as unfavourable conditions

5. Immortality is present

5. Immortality is absent

Example: Amoeba reproduces by binary fission

Example: Plasmodium reproduces through multiple fission

  • 1 answers

Yogita Ingle 1 day, 1 hour ago

There are three different stages in the formation of urine by the filtration of blood through the nephrons. The process of urine formation in kidneys include the following steps:
(i) Glomerular filtration - Urine formation begins when the blood is filtered by the glomerulus then enters the Bowman's capsule and the glomerular filtrate is formed. The afferent arteriole entering the glomerulus is wider than the efferent arteriole in diameter. This increases the blood pressure within the glomerulus helps in the filtration. Glomerular filtrate is formed of all blood constituents except corpuscles and plasma proteins.
(ii) Tubular reabsorption - When the glomerular filtrate comes to the proximal tubule then the essential nutrients are reabsorbed. Glucose, amino acids, water, ions like sodium, potassium, chloride, bicarbonate, magnesium, calcium are reabsorbed from the glomerular filtrate. When the filtrate finally comes to the collecting duct ADH (anti-diuretic hormone) acts and reabsorbs the excess water and decreases the urine volume.
(iii) Tubular secretion - When the glomerular filtrate is in the proximal tubule creatinine, uric acid are secreted in it. When the filtrate goes to the distal part urea, potasium ion and some hydrogen ions are secreted in the form of urine.

  • 1 answers

Yogita Ingle 1 day, 2 hours ago

 

Niche is the particular area within a habitat occupied by an organism. It also referes to the unique functional position of a species in a community of an ecosystem. Every organism performs important physical and functional roles within an ecosystem, which determines its niche.

  • 2 answers

Vaibhavi Vande 21 hours ago

A weak acid is one which doesn't ionise fully when it is dissolved in water. Ex_ acetic acid - CH3COOH Strong acids is one which fully ionise when it dissolved in water. Ex_ HCl - hydrochloric acid

Raj Kumar 1 day, 5 hours ago

Those acid form less H+ ion are called weak acid.Example-H2CO3. and those acid form more H+ ions are called strong acid. Example- HCL
  • 2 answers

Md Jeeshan 1 day ago

Alcohol and ethanol are non metal so it can't release their ions in water.

Aditya Singh 1 day, 5 hours ago

They release ions in water but release in less ammount than HCl or HNO3
  • 1 answers

D.R.K The Gamer 1 day, 11 hours ago

Because, it is photolytically decompositable substance. It decomposes in the presence of light.
  • 1 answers

Gaurav Seth 1 day, 10 hours ago

A n s w  e r

Combustion of Liquified Petroleum Gas (LPG) is a chemical change because, after its combustion, the new substance formed changes chemically and cannot be turned back into LPG.

  • 2 answers

Sudhanshu Kumar Yadav 1 day, 12 hours ago

Vavles present in vein vescles Because Vavles working is that flows of blood in backward direction from body to heart.

Yogita Ingle 1 day, 16 hours ago

Valves are flap-like structures present in heart that allow blood to flow in one direction. The valves control the flow of blood through the heart by opening and closing during the contractions of the heart. The opening and closing functions of the valves are controlled by pressure differences generated within the heart, as well as some muscles located within the heart. The heart has two kinds of valves, atrioventricular and semilunar valves.  

  • The two atrioventricular (AV) valves, which are between the atria and the ventricles, are the mitral valve and the tricuspid valve.
  • The two semilunar (SL) valves, which are in the arteries leaving the heart, are the aortic valve and the pulmonary valve.

Thus there are four valves in all.

  • 3 answers

Yogita Ingle 1 day, 16 hours ago

According to Fleming's left hand rule, stretch the thumb, forefinger and middle finger of your left hand such that they are mutually perpendicular. If the first finger points in the direction of magnetic field and the second finger in the direction of current, then the thumb will point in the direction of motion or the force acting on the conductor.

P H 1 day, 16 hours ago

Hlo

Aadesh Singh 1 day, 16 hours ago

Hi
  • 2 answers

Yogita Ingle 1 day, 16 hours ago

Plants can change their shape with the help of cytoskeleton present in their cytoplasm during stress conditions.

Palak G 1 day, 17 hours ago

Stupid plants 🌱never change their shape they change their size and it is natural change
  • 2 answers

Sudhanshu Kumar Yadav 1 day, 16 hours ago

Our body conduct electricity because in our body also present of ions.. We know that ions carry charge some carry +ve / -ve positive are proton and negative are electron. For ex.. Ions of zinc , iron magnesium, hydrogen, oxygen. Etc

Nitya Nand Mishra 1 day, 16 hours ago

When our body will do anything then the brain first send electric impulses to the part of body which will do work .it also same as in heart. Hence our body conduct electricity.
  • 2 answers

Sakshi Priya 1 day, 18 hours ago

Such reaction in which two or more elements/compound/substances react with each other and form single product is called combination reaction .

Arya Jaiswal 1 day, 18 hours ago

A reaction in which two or more elements/substances reacts and form their is called combination reaction. Understand bro.
  • 2 answers

Arya Jaiswal 1 day, 18 hours ago

Plastic is not degraded by bacteria becoz the action of bacteria doesn't affect on the molecules of plastics that's why.

Ashnoor Kamboj 1 day, 19 hours ago

Plastic is not degraded by bacterias because they don't have enzymes to degrade plastic.
  • 1 answers

Ashnoor Kamboj 1 day, 19 hours ago

incomplete dominance, the cross between plants with pure red and white  flowers results in F1​ generation plants with all pink flowers. The self pollination or fertilization of these plants results in progenies (F2​ generation)  with red, pink and white flowers in a ratio of  1:2:1 respectively. So, the correct answer is 'self-pollination'

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