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Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.

Three groups of plants that bear archegonia are given below: Bryophytes Pteridophytes Gymnosperms. The life cycle of a pteridophyte, then it consists of two morphologically distinct phases: (i) The gametophytic phase (ii) The sporophytic phase. These two phases come one after another in the life cycle of a pteridophyte and this phenomenon is called alternation of generation. The gametophyte...

Water Canal System is the feature of

A.

Hydra
 
B.

Sea anemone
 
C.

Sycon
 
D.

Pheretima

Water pollution 

Give me a easy answer 

The difference in mass makes the pull of earth stronger so it rortates around earth.It does not move closer because its in equilibrium,its roations and revolution counteract the pull of the earth.It remains so because its angular moomentum is conserved.

 

mention the options with respect to mitosis.  

What is antigen?

A substance That enters the body and start a process that can cause disease.  The body then usually produces Substances  to fight the integer

well in a reference book iits stated that phosphorus is a constituent of cell membrane, part of protein and dna and rna synthesis.

but in an explanation for the question for mineral transport exam of career 360 its stated thatc phosphorus is not a constituent.

which one is correct?

Phosphorus is also a component of cell membrane structure but in the form of phospholipids, 
Pollination of the hyacinth and water lily is brought about by the agency of insects and winds.
Yes, in every section (Physics, Chemistry, Zoology, and Botany )of the paper assertion and reasoning questions being asked and around a total of 45 questions are there are of assertion and reasoning.

Q2. What shape is (a) Your instrument box? (b) A brick? (c) A matchbox? (d) A road-roller? (e) A sweet laddu?

the shape of the following things are (a) Your instrument box- Cuboid (b) A brick- Cuboid (c) A matchbox-Cuboid (d) A road-roller- Cylinder (e) A sweet laddu-Sphere

Find (i)\frac{7}{9}-\frac{2}{5} \ \ \ \ \ (ii) 2 \frac{1}{5}-\frac{(-1)}{3}

1:-  0.5

2:-  2.5

What will be the additive inverse of \frac{-3}{9} ?, \frac{-9}{11} ?, \frac{5}{7} ?$

The additive inverse of   The additive inverse of  The additive inverse of  

i need my class 6th admit card for nvs entrance sahil purohit vishakapatnam

Admit card is available in the official website of Jawaharlal Navodaya Vidyalaya. Go to the admission link and click on the class 6th admit card link. Login to downed the admit card.

What is the last date of Class 12 admission

Hi,  Please tell me you are looking for NIOS admission or regular school admission.

What is binary number

A binary number is represened by 0 and 1. The binary number system has base 2. It is used in digital electronics. For example 7 can be represented in binary system as 111. That is 

1. To at Rot Rat - 1 sin 60° cos 30° + sin 30° cos 60° (1) 2 tan 450+ cos² 30° - sin 60° cas 450 un soc 30 + cosec 30° (v) sin 30° + tan 45° - cosec 60° soo 30° + cos 60° + cot 45° scor 60° + 4 sec 30° - tan* 45° sin 30° + cos² 30°

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Please ask a relevant question, we are happy to answer.

Nios board

NIOS is National Institute of Open Schooling and is the board under the Union Government of India.  

Calculate the molar mass of the following substances. (c) baking soda

84

 

Why is glass considered a super cooled liquid?

Glass is an amorphous solid. Just like liquids, amorphous solids also have a tendency to flow, though very slowly. Therefore, these are called pseudo solids or supercooled liquids.
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