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2901.

What are casparian strips? Where do you come across them?

Answer» these stripes are found on roots of plant which is impermeable to water and between them transfusioncells are present
2902.

The period between two successive mitotic division is called ?

Answer» Interphase
Interphase
2903.

Give the explanation of modification of stem

Answer» Modifications of stem\tFor storage of food- Underground stems of potato, ginger, turmeric, zaminkand, Colocasia are modified to store food in them.\tFor support- Tendrils which develop from axillary buds, are slender and spirally coiled and help plants to climb. Example- gourds\tFor protection- Axillary buds of stems may also get modified into woody, straight and pointed thorns, which protect plants from browsing animals. Example- Citrus\tFor photosynthesis- Some plants of arid regions modify their stems into flattened or fleshy cylindrical structures, which contain chlorophyll and carry out photosynthesis. Example-\tFor spread and vegetative propagation-\tUnderground stems of some plants spread to new niches and when older parts die new plants are formed. Example- grass and strawberry.\tIn some plants, a slender lateral branch arises from the base of the main axis and after growing aerially for some time arch downwards to touch the ground. Example- mint and jasmine\tA lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in aquatic plants. Example- Pistia\tThe lateral branches originate from the basal and underground portion of the main stem, grow horizontally beneath the soil and then come out obliquely upward giving rise to leafy shoots. Example- banana, pineapple.
2904.

Name any two important macromolecules which is responsible for plants growth

Answer» Biological\xa0macromolecules\xa0are\xa0important\xa0cellular components and perform a wide array of functions necessary for the survival and growth of living organisms. The four major classes of biological\xa0macromolecules\xa0are carbohydrates, lipids, proteins, and nucleic acids.\xa0Nucleic acids\xa0are the most important macromolecules for the continuity of life. They carry the genetic blueprint of a cell and carry instructions for the functioning of the cell.
2905.

Ayush where r u

Answer» Mine 15
My age is 16 and urs
Paper was good
2906.

Plz send observation table readings for plasmolysis experiment

Answer»
2907.

What is the difference bw copulation and sexual intercourse

Answer» No difference.
2908.

How are parthenocarpic fruit formed

Answer» Parthenocrapic fruits are formed without fertilization
In some plants the fruit develops without fertilization and this phenomenon is known as parthenocarpy The parthenocarpic fruits can be induced artificially through the application of growth hormones and such fruits are seedless. Apomictic seeds are produced in some species when the diploid egg cell is formed without reduction division and develops into the embryo without fertilisation. In such species, each ovule contains many embryos.
2909.

Cerebellum?

Answer» It\'s in 10 th class.. I know very well
2910.

My teacher asked me Why nipples of breast are sensitive to touch

Answer» I m from Jaipur, Rajasthan
I would like to touch so i could better explain u
M I right cuttie
But i think nipples are not that much sensitive to touch if we ourself touch it
And u
Well m from greater Noida
M also not feeling good when he asked me
Yes my teacher asked it
Muskaan Di aap teacher Ki complaint principal or coordinator se kijiye... These foolish questions don\'t ask again.. ??
Well r u serious that ur teacher asks u so..
Where r u from
Ya
And m not using fb
I also wear bra but its ok
But how can i tell this to my teacher ayush its somewhat strange na
Hey muskan , do u use fb
They must be protected under branded bra , so he asks u..
Its my humble request
Please dont report this question becoz really my teacher asked it to me
2911.

Explain different types of Meristematic tissues on the basis of position?

Answer» Meristematic tissues are growth tissues and found in the growing regions of the plant. According to their position in plant, meristems are apical, lateral and intercalary.\tApical meristem - Apical meristem is present at the growing tips of stems and roots and increases the length of the stem and the root.\tLateral meristem – Lateral meristems are found beneath the bark. The girth of the stem or root increases due to lateral meristem (cambium).\tIntercalary meristem - Intercalary meristem is the meristem at the base of the leaves or internodes (on either side of the node) on twigs. It increases the length of the organs such as leaves and internodes.
2912.

Cell wall of fungi is made up of

Answer» Chitin confirm
Chitin
Chitin
Chitin
Polymer Chitin..... Ur answer
Excuse me
Polysaccride
Chitin
Chitin
2913.

Amphibians are supposed to be the Linking point between aquatic and terrestrial life explain

Answer» If it is that way then Dinosaur T-rex is the link bw Chicken and Lizard
2914.

In ameoba cytoplasmic streaming is present or not....??

Answer» Yes, cytoplasmic streaming is present in amoeba .It is also referred to as cyclosis or cytoplasmic movement.
2915.

What are chlomicrons

Answer»
2916.

Calculate the stomatal index of aloe vera leaf.

Answer»
2917.

how to prepare for newt

Answer» If u want u can attend coaching classes r completely read through the biology text of grade 11 and attend as many model test possible in Internet.....All the Best...
2918.

What is erythrocytes

Answer» a red blood cell, which (in humans) is typically a biconcave disc without a nucleus. Erythrocytes contain the pigment haemoglobin, which imparts the red colour to blood, and transport oxygen and carbon dioxide to and from the tissues.
2919.

About polysaccharide

Answer» Polysaccharides are polymeric carbohydrate molecules composed of long chains of monosaccharide units bound together by glycosidic linkages and on hydrolysis give the constituent monosaccharides or oligosaccharides. They range in structure from linear to highly branched.
2920.

About polysaccharides

Answer»
2921.

what is dioceous?

Answer» Dioceous means separate *** (male and female)
2922.

Name the four major groups of protozons

Answer» siliated, flagilated, sporoazoans, ameoboids
2923.

From which part of the cotton plant is cotton obtained?

Answer»
2924.

Name the basic unit of chitin molecule .

Answer»
2925.

Why in anaphase and metaphase the chromatin change their respective position?

Answer» Due to mitotic division
2926.

How is a pinnately compound leaf diffrent from a palmately compound leaf

Answer»
2927.

Which type of filament present in chlorophyll

Answer»
2928.

What are the external features of oriental garden lizard for class 11

Answer»
2929.

What is teguments

Answer»
2930.

Define living and num living

Answer»
2931.

Define living and nunliving

Answer»
2932.

What are mesoderm

Answer»
2933.

unicellular fungi

Answer»
2934.

What is Arthopoda

Answer»
2935.

Air bladder in Pisces

Answer»
2936.

Airtel bladder in pisces

Answer»
2937.

Describe various parts of an angiospermic plant with a well labeled diagram.

Answer»
2938.

What do you mean by gizzard.

Answer» Gizzard is a modified muscular pouch behind the stomach in the digestive tract of birds, having a thick lining and often containing ingested grit that aids in the breakdown of seeds before digestion.
2939.

What is the significance of meiosis and mitosis

Answer»
2940.

All vertebrates are chordates but all chordates are not vertebrates. Justify

Answer»
2941.

Name the covering of the plumule and radicle of maize grain

Answer» Plumule covering is coleoptile and radicle covering is coleorhiza
2942.

What happens to the food in the gizzard of a cockroach and birds

Answer»
2943.

What are phycocolloids

Answer»
2944.

What is counter current mechanism. ?

Answer»
2945.

What do u mean by coelomates?

Answer» Animals possessing coelom are called coelomates
2946.

How many types of spores

Answer»
2947.

What are microcodes???

Answer»
2948.

What is canabalism

Answer»
2949.

Name the various kind of layers which constitute the bark

Answer»
2950.

What is centeromere

Answer» When two chromatids are combine together to form a chromosomes then the narrow region formed between chromosomes is known as centeromere
Its the middle part of Chromosomes from which the chromatids are attached see whether is it correct or not