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Yogita Ingle 7 years, 6 months ago

Seed dispersal is the movement or transport of seeds away from the parent plant.
The seeds are dispersed by various ways:
(i) By winds: The light and hairy seeds of some plants are dispersed by winds. or example: grasses, seeds of aak (madar) and sunflower
(ii) By water: Some seeds are dispersed by water. These seeds and fruits have floating ability in the form of spongy or fibrous outer coat as in coconut.
(iii) By animals: Some seeds are dispersed by animals. Specially spiny seeds with hooks which get attached to the body of animals and are carried to distant places. For example: xanthium and urena.
(iv) By human: Human beings also help in the dispersal of seeds. They carry fruits to the long distances and throw their seeds there.
(v) Some seeds are dispersed when the fruits burst with sudden jerks. The seeds are scattered far from parental plant. For example: balsam and castor.

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Meghana Jha 7 years, 6 months ago

Chemical change
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Ayisha Dhilna 7 years, 5 months ago

Search on youtube

Gayatri Badarla 7 years, 6 months ago

With your hand on the sheet?

Hardik Vats 7 years, 6 months ago

By pencil or pen..... hahahahahaha what a bakwas question
  • 1 answers

Meghana Jha 7 years, 6 months ago

Search on YouTube
  • 1 answers

Aditya Tomar 7 years, 6 months ago

1- The new plants are obtained without seeds. 2- The new plants are exact copies of the parent plants
  • 2 answers

Antima Maity 7 years, 6 months ago

By boiling in alcohol then adding a few drops of iodine and then it turns blue

Saakshi Khanadale 7 years, 6 months ago

By the help of alcohol
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Saakshi Khanadale 7 years, 6 months ago

The fertilised egg is known as zygote
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Yogita Ingle 7 years, 6 months ago

Potassium ferrocyanide is used to determine the concentration of potassium permanganate, a compound often used in titrations based on redox reactions. Potassium ferrocyanide is used in a mixture with potassium ferricyanide and phosphate buffered solution (PBS) to provide a buffer for X-Gal, which is used to cleave Beta-galactosidase, giving a bright blue visualization where an antibody (or other molecule), conjugated to Beta-gal, has bonded to its target.

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Rimjhim Singh 7 years, 6 months ago

In sexual reproduction New plants are obtained from seeds.
  • 1 answers

Meghana Jha 7 years, 6 months ago

SI -- from Eric Weisstein's World of Physics. "SI" stands for "System International The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.
  • 2 answers

Sreemayi Ronanki 7 years, 6 months ago

21 September

Star Mehbiz 7 years, 6 months ago

Friday 21 September.
  • 1 answers

Arshlan Ashu 7 years, 6 months ago

The trade winds in whether
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Yogita Ingle 7 years, 5 months ago

Symbiosis or mutualism : Symbiosis is the combination of two Greek words ‘Sym’ means ‘with’ and ‘biosis’ means ‘living’, which means living together. In symbiosis or mutualism two different types of organisms live and work together for their mutual benefit from each other. They share shelter and nutrients, e.g. Lichens. Lichens are composite organisms composed of fungus and alga. Fungus is a saprophyte and alga is an autotroph. The Fungus supplies water and minerals to the cells of the alga while the alga supplies food; prepared by photosynthesis.

A bird sitting on the back of a rhino is an example of symbiosis. The bird gets worms to eat, while the rhino gets rid of those worms.

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Aditya Tomar 7 years, 6 months ago

Plants in which both male and female reproductive organs are there

Ojasvi Koul 7 years, 6 months ago

In plants
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Satyam Kumar 7 years, 6 months ago

the bell that works of electricity due to the regular making and breaking of circuit is known as electric bell
  • 1 answers

Sia ? 4 years, 3 months ago

Storage Host Component

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Satyam Kumar 7 years, 6 months ago

1.combination reaction 2.decomposition reaction 3.displacement reaction 4.nuetralisation reaction
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Yogita Ingle 7 years, 5 months ago

Plants make their food by the process of photosynthesis, but animals cannot make their food themselves. Animals get their food from plants. Some animals eat plants directly while some animals eat plant eating animals. Thus, animals get their food from plants either directly or indirectly.
All organisms require food for survival and growth. Requirement of nutrients, mode of intake of food and its utilization in body are collectively known as nutrition.

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Gayatri Badarla 7 years, 6 months ago

Some substance can be obtained in pure state from their solution by crystallisation

Archit Goel 7 years, 6 months ago

It is a process of converting anything into crystals
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Sathya Narayanan 7 years, 6 months ago

The micro organisms which convert dead plants or animal tissue into humus are called decomposers Eg: small insects
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Shreya Patel 7 years, 6 months ago

Transport of material in plants and animals is necessary as we and every part of the organism need food for obtaining energy building and maintaining the body .The waste generated by the cell present in body of every organism need to be eliminate regularly does transportation is necessary for both animals and plants. accumulation of waste products released from the cell maybe toxic .Thus this must be removed from body at regular intervals
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Meghana Jha 7 years, 6 months ago

PLASMA - fluid part of blood. ; RED BLOOD CELLS (RBC) - red coloured cells transports oxygen and contains haemoglobin.; WHITE BLOOD CELLS (WBC) -cells that protects us from disease and infection.; PLATELETS - these cells are responsible for clotting of blood.

Gayatri Badarla 7 years, 6 months ago

Plasma Red blood cells (RBC) White blood cells (WBC) Platelets

Abhishek Yadav 7 years, 6 months ago

Blood contain :hemoglobin *red blood cells *white blood cells *plasma

Himanshi Sobti 7 years, 6 months ago

Blood contains plasma RBC WBC and platelets
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Satyam Kumar 7 years, 6 months ago

due to the presence of haemoglobin

Amitava Jagadev Singh 7 years, 6 months ago

Due to presence of heamoglobin or RBC
  • 2 answers

Satyam Kumar 7 years, 6 months ago

to neutralise the acid emitted by bite of ant

Farshida Farook 7 years, 6 months ago

To neutralize ant bites calamine lotion is added
  • 1 answers

Saanvi Goyal 7 years, 6 months ago

The continuous circulation of water from Earth's surface to atmosphere and vice-versa is known as Water Cycle.
  • 1 answers

Gayatri Badarla 7 years, 6 months ago

When the air heats it becomes less dense and begins to float (rises up ). Therefore hot air rises up.
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Yogita Ingle 7 years, 6 months ago

Waste management is the entire process from collection of waste from source till its disposal. This includes all processes like transportation, analysis, legal procedures, along with monitoring and enforcing regulations. There are a number principles related to waste management, but a generally accepted concept is one of the ‘Hierarchy of Waste Management’.

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Yogita Ingle 7 years, 5 months ago

These are large plants where wastewater is cleaned before being sent to the nearest water bodies or being reused. The sewage treatment involves physical, chemical and biological processes to remove impurities from the wastewater.
Physical Process:

1. Filtration: The wastewater is passed through bar screen. Large objects; like rags, sticks, plastic bags, cans, etc. are removed in this process.
2. Grit and Sand Removal: The wastewater is slowly passed through the sedimentation tank. Grit, sand and pebbles settle down at the bottom.
3. Sedimentation: Water is then sent to the sedimentation tank. Solids; like faeces settle at the bottom. Floatable impurities; like oil and grease float on the surface. A scraper removes the faeces from the water. The impurity thus collected is called sludge; which is sent to the sludge tank. The sludge can be used to produce biogas or to produce manure. A skimmer removes the floatable impurities. Now, the water is called clarified water.

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