NEET Biology Questions and Answers

The study of the external structure of an organism - Answer-External Morphology The study of the internal structure of an organism - Answer-Internal Morphology The parts of the plant body which are concerned with vital functions such as nutrition and growth - Answer-Vegetative Parts Parts which are concerned with sexual reproduction are called floral or reproductive parts - AnswerReproductive Parts The descending part of the plant axis, which grows downwards into the soil - Answer-Root 1. Generally non green and cylindrical 2. Produce similar organs such as secondary and tertiary roots, endogenously 3. Do not produce dissimilar organs like leaves 4. Do not have nodes - Answer-Characteristics Of Roots The multi-cellular cap that protects the tender apex of the root - Answer-Root Cap Also know as meristematic region. It is the growing part of the root that is made up of meristematic cells which have the power of cell division. - Answer-Region of Cell Division Made up of newly formed cells that elongate rapidly, increasing the length of the root. - Answer-Region Of Elongation Also known as region of root absorption. The outermost layer is known as the piliferous that contain toot hairs that help absorption and conduction of water and mineral ions - Answer-Region Of Roots HairAlso known as epiblema. This is the outermost layer of the region of root absorption that produce root hair. - Answer-Piliferous Layer Elongated, single celled, tubular structures which remain in contact with soil particles. - Answer-Root Hair Also known as the region of cell maturation where the enlarged layer undergoes differentiation to for, different types of primary roots and lateral roots. - Answer-Region Of Maturation 1. Tap roots or true roots 2. Adventitious roots - Answer-Types Of Roots A root that develops from the radicle of an embryo during seed germination is called a a true root/tap root. - Answer-Tap Roots The main root - Answer-Primary Root Branches of the first order - Answer-Secondary Root