Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Suchismita Mohanty 5 years ago
- 1 answers
Meghna Thapar 4 years, 3 months ago
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.
- Apical meristem - Apical meristem is present at the growing tips of stems and roots and increases the length of the stem and the root.
- Lateral meristem – Lateral meristems are found beneath the bark. The girth of the stem or root increases due to lateral meristem (cambium).
- Intercalary 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.
Posted by Gungun Sharma 5 years ago
- 9 answers
Posted by Kavita Prajapat 5 years ago
- 1 answers
Vazha Tech 5 years ago
Posted by Kavita Prajapat 5 years ago
- 1 answers
Meghna Thapar 4 years, 3 months ago
Importance of classification:
(i) It makes the study of such a wide variety of organisms easy.
(ii) It projects before us a good picture of all life forms at a glance.
(iii) It helps us understand the interrelationship among different groups of organisms.
(iv) It serves as a base for the development of other biological sciences such as biogeography etc.
(v) Various fields of applied biology such as agriculture, public health and environmental biology depends on classification of pests, disease vectors, pathogens and components of an ecosystem.
Posted by Chao Nikhil Gogoi 5 years ago
- 2 answers
Y Jangir 5 years ago
Posted by Parmeswar Naik 5 years ago
- 1 answers
Yogita Ingle 5 years ago
Cycas is an evergreen plant that looks like a palm. It exhibits a phylogenetic relationship with pteridophyte. The evolutionary characters include:
- Shedding of seed when the embryo is immature.
- Slow growth.
- Monocyclic wood.
- Little secondary growth.
- Leaf-like megasporophylls.
- Circinate ptysix.
- Persistent leaf bases.
- Arrangement of microsporangia is well-defined archegonia.
Posted by Laxminarayan Tandi 5 years ago
- 3 answers
Pratibha Kumari 5 years ago
Posted by Osheen Khan 5 years ago
- 1 answers
Meghna Thapar 4 years, 3 months ago
Gut refers to the portions of the alimentary canal, particularly the stomach and the intestines sometimes including the ****, especially in animals that eliminate wastes through the ****, in contrast to other animals that excrete waste through the mouth or by other means. In human anatomy, the intestine (bowel, or gut. Greek: éntera) is the segment of the gastrointestinal tract extending from the pyloric sphincter of the stomach to the **** and, as in other mammals, consists of two segments, the small intestine and the large intestine.
Posted by Sultana Asmin 5 years ago
- 1 answers
Posted by Bhavya Shrivastava 5 years ago
- 0 answers
Posted by Bhavya Shrivastava 5 years ago
- 3 answers
Muskann Tiwari 5 years ago
Yogita Ingle 5 years ago
Copulation is the act of mating or sexual intercourse. It involves insertion of a male's ***** into a female's ****** for the purposes of sexual pleasure, reproduction, or both.
Posted by Simran Yadav 5 years ago
- 0 answers
Posted by Dependra Chettri 5 years ago
- 1 answers
Yogita Ingle 5 years ago
Homosporous : In pteridophytes, generally all the spores are of same kind, such plants are called homosporous.
Heterosporous : Some plant of pteridophyta have different kind of spores." These plants are known as heterosporous. eg., Selaginella, Salvinia
Posted by Iyadh Abdul Azeez 5 years ago
- 1 answers
Shivani Sandals 5 years ago
Posted by Mohd Naushad 5 years ago
- 1 answers
Posted by Atul Kumar 5 years ago
- 1 answers
Posted by Vanshika Chauhan 5 years ago
- 3 answers
Y Jangir 5 years ago
Bhavya Shrivastava 5 years ago
Posted by Thaneesha Sejal 5 years ago
- 2 answers
Bhavya Shrivastava 5 years ago
Gaurav Seth 5 years ago
The main function of the sieve tube is transport of carbohydrates, primarily sucrose, in the plant (e.g., from theleaves to the fruits and roots). Unlike the water-conducting xylem vessel elements that are dead when mature, sieve elements are living cells. They are unique in lacking a nucleus at maturity
Posted by Prem Devo 5 years ago
- 1 answers
Meghna Thapar 4 years, 3 months ago
The digestive system consists of the alimentary canal and digestive glands. The alimentary canal of cockroach is divided into foregut, midgut, and hindgut. The mouth opens into a short tubular pharynx, leading to a narrow tubular passage, the oesophagus. Cockroaches use their mandibles, or jaws, to bite and chew their food. From the mouth organs, the food passes into the foregut, or esophagus. The foregut opens into a crop, where undigested food is temporarily stored. The gastric sacks contain bacteria that the cockroach uses to digest its food.
Posted by Pravindra Jaiswal 5 years ago
- 2 answers
Gargi Chakraborty 5 years ago
Posted by Shailendra Kumar 5 years ago
- 1 answers
Posted by A Rathour 5 years ago
- 1 answers
Posted by Gulshan Singh 5 years ago
- 4 answers
Sia ? 5 years ago
You can check here;
<a href="https://mycbseguide.com/cbse-syllabus.html">https://mycbseguide.com/cbse-syllabus.html</a>
Sanower Zafer 5 years ago
Posted by Chanchal Pradhan 5 years ago
- 1 answers
Yogita Ingle 5 years ago
|
Amphibians |
Reptiles |
|
These are cold-blooded animals. |
These are warm-blooded animals. |
|
They live on land as well as in water. |
They live usually on land. |
|
Their larval stage is spent in water and adulthood on land. |
Their larval and adult stages are spent on land. |
|
They are oviparous. |
They are oviparous as well as viviparous. |
|
Fertilization is external. |
Fertilization is internal. |
|
They can breathe through gills as well as lungs. |
They breathe through lungs. |
|
The heart is three-chambered. |
The heart is three-chambered but the ventricle is further divided through a septum. |
|
They secrete toxins from their skin to protect themselves from predators. |
The skin is protected by hard scales, and they also secrete toxin through teeth and nails. |
|
Skin is smooth and highly porous. |
Skin is dry, hard and scaly. |
|
The webbed feet help them to swim. |
They have limbs to facilitate running and swimming. |
|
Their eggs are covered with gel. |
Their eggs are covered with a hard protective covering. |
|
They have restrictions to narrow bands of the colour spectrum. |
They can visualize and distinguish between different colours. |
Posted by ?Garima Sharma? 5 years ago
- 1 answers
Khushi Rajput 5 years ago
Posted by Piju Medhi 5 years ago
- 1 answers
Meghna Thapar 4 years, 3 months ago
In botany, secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken, while primary growth is growth that occurs as a result of cell division at the tips of stems and roots, causing them to elongate, and gives rise to primary tissue. In woody plants, primary growth is followed by secondary growth, which allows the plant stem to increase in thickness or girth. Secondary vascular tissue is added as the plant grows, as well as a cork layer. The bark of a tree extends from the vascular cambium to the epidermis.
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
? ? 5 years ago
0Thank You