CBSE > Class 08 > Science | CBSE Board | Homework Help

Plant Cell	Animal Cell
Cells comparatively larger in size	Cells usually small in size
Cell wall present	Cell wall absent
Plastids present	Plastids absent
Vacuole are large and generally one	Vacuales are absent, if present small in size and large in number
Dictyosmoes (Golgi apparatus) are present	Prominent Golgi apparatus are present

0Thank You

Yashaswini V 4 years, 1 month ago

0Thank You

ANSWER

What is the s .I unit force

Posted by Bhoomika A Koppal 4 years, 2 months ago

CBSE > Class 08 > Science

5 answers

Apurva Kapgate 4 years, 1 month ago

Newton

0Thank You

Srishti . J💜 26 4 years, 1 month ago

(N)

1Thank You

$$ Virubhai 4 years, 2 months ago

Nuton

1Thank You

Kanu Choudhary 4 years, 2 months ago

SI unit of force is newton

1Thank You

Ankit Kumar Singh 4 years, 2 months ago

Newton

1Thank You

ANSWER

Why glass is transparent

Posted by Bhumi Rathi 4 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Nargis Kamal 4 years, 1 month ago

Because glass is glass

1Thank You

Saina Raj 4 years, 1 month ago

Because glass is glass

0Thank You

ANSWER

The world is largely known through the senses. The sense of sight is one of the most important senses. Through it we see mountains, rivers, trees, plants, chairs, people and so many other things around us. At night we see the stars and moon. But how is seeing made possible? What makes things visible? You may say that eyes see the objects. But, can you see an object in the dark? It means that eyes alone cannot see any object. It is only when light from an object that enters our eyes we see the object. The light may have been emitted by the object, or may have been reflected by it. A mirror changes the direction of light that falls on it. Can you tell in which direction the light falling on a surface will be reflected? Let us find out with the help of an activity: Incidence Ray :The light ray which strikes any surface is called incidence Ray Reflected ray: The ray which come back from the surface after reflection is known as reflected ray. Normal: A line making an angle of 90 degree with the object surface at a point where the incidence ray strikes the mirror is known as the normal . The line is known as normal to the reflecting surface that point Angle of incidence(i):The angle between the normal and the incident ray is called angle of incidence. Angle of reflection(r):Angle between the normal and reflected ray is known as angle of reflection. • Fix a white sheet of paper on a drawing board or a table. Take a comb and close all the opening except one in the middle. You can use a strip of black paper for this purpose. • Hold the comb perpendicular to the sheet of paper. Throw light from a torch through the opening of the comb from one side. With slight adjustment of the torch and the comb you will see a ray of light along the paper on the other side of the comb. • Keep the comb and the torch steady. Place a strip of plane mirror in the path of the light ray. What do you observe? After striking the mirror, the ray of light is reflected in another direction. Now check yourself: Q1.Suppose you are in a dark room, can you see objects in the room ? Can you see objects outside the room. Explain. Q2.What would happen if you threw the light on the mirror along its normal. Q3.Label the given diagram of reflection of light: Q4.What is reflection of light? Q5.Can we see an object if a incident ray of light that strikes its surface is not reflected back? Why?

Posted by Dhruv Singh 4 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Describe the electroplating of copper on an iron strip.

Posted by Abhijeet Jha 4 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Shakshi Sharma 4 years, 1 month ago

Connect an iron nail that to be electroplated to the negative terminal of a battery . Connect a copper strip to the positive terminal of the battery . When electricity is passed through the solution the copper irons move towards the cathode and get reduced to copper metal. This metal gets electroplated on the object.

2Thank You

ANSWER

The basic unit digit is polymer

Posted by Himanshu Verma 4 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Nargis Kamal 4 years, 1 month ago

Monomer

1Thank You

Ashmita Sarkar 4 years, 1 month ago

I can not understand this question

0Thank You

ANSWER

slicion is ?

Posted by Numan Ansari 4 years, 2 months ago

CBSE > Class 08 > Science

3 answers

Nargis Kamal 4 years, 1 month ago

Metalloid

0Thank You

Aran Gupta 4 years, 1 month ago

Tooth enamel

0Thank You

Numan Ansari 4 years, 2 months ago

metaliod

1Thank You

ANSWER

which is stongest part of body

Posted by Numan Ansari 4 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Rajni Maheshwari 4 years, 1 month ago

Enamel

0Thank You

Numan Ansari 4 years, 2 months ago

enamel

0Thank You

ANSWER

Why is nylon considered to be a good material for making fish

Posted by Rajeshwari Vk 4 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Preeti Dabral 4 years, 2 months ago

Nylon is considered to be a good material for making fishing nets because; Nylon can absorb water and will not get weakened by being submerged in water for a longer duration. The nylon properties are such that it can withstand any change, whether it is dry or wet.

1Thank You

Chandra Shrikant 4 years, 2 months ago

Nylon is a very stronger fabric than steel, generally synthetic fibre do not absorb water, It is able to withstand watery conditions . its strength does not get depleted even if submerged in water

0Thank You

ANSWER

All important diagrams of science

Posted by Amulya Christina Sd 4 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Which acid is present in curd

Posted by Aushuma Kadhu 4 years, 2 months ago

CBSE > Class 08 > Science

5 answers

Ankit Kumar Singh 4 years, 2 months ago

Lactic acid

0Thank You

Monika Monika 4 years, 2 months ago

Lactic acid

0Thank You

Chandra Shrikant 4 years, 2 months ago

Lactobacillous is a bacteria which helps in formation of curd In *lactic acid*

0Thank You

Sai Keerthana Aripirala 4 years, 2 months ago

Lactic acid

0Thank You

Vasu Kumar 4 years, 2 months ago

Lactic acid

2Thank You

ANSWER

Define lubricants

Posted by S N 4 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Palak Singh Rajput 4 years, 2 months ago

Lubricant is a substance which reduce the force of friction as for example oil and grease

1Thank You

ANSWER

Science ch 4 th table 4.4

Posted by Naina Singh 4 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Fungi consist of two main group of organisms _____ and moulds

Posted by Anjali Khatri 4 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Sia ? 4 years, 2 months ago

Fungi are a group of living organisms which are classified in their own kingdom. This means they are not animals, plants, or bacteria. Unlike bacteria, which have simple prokaryotic cells, fungi have complex eukaryoticdifferences between the two and both are commonly referred to as „Bread mold‟. only fungal organisms. The organisms found to be associated with the spoilage of bread were strictly fungal organisms which include; Rhizopus spp, Aspergillus spp, Mucor spp, Penicillium spp, and Fusarium spp. cells like animals and plants.

0Thank You

Shaurya Shrivastava 4 years, 2 months ago

There are two types of Fungi One is Fungus and another one is Mould.Fungi can be Multicellular or Unicellular.Examples of Fungi:- 1.Rhizopus 2.Paramecium 3.Aspergillus 4.Fusarium 5.Mucor 6.Mushrooms 7.Yeast 8.Puffball

0Thank You

ANSWER

What ispressure

Posted by Mr Hanumanta 4 years, 2 months ago

CBSE > Class 08 > Science

3 answers

Sia ? 4 years, 2 months ago

Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure is the pressure relative to the ambient pressure. Various units are used to express pressure.

0Thank You

Bhawna Kumari 4 years ago

Force per unit area is called presure . It's unit is Pascal(pa ) pressure =force upon area

0Thank You

Preeti Rangotha 4 years, 2 months ago

0Thank You

ANSWER