Description : Cuscuta is a – (1) partial stern parasite (2) complete stem parasite (3) partial root parasite (4) complete root parasite
Last Answer : (2) complete stem parasite Explanation: Cuscuta (Dodder) is a genus of about 100-170 species of yellow, orange or red (rarely green) parasitic plants. Dodders are supremely adapted for a life of ... closer inspection reveals tiny scale leaves pressed close to the stems. So it is a stern parasite.
Description : Striga is — parasite a. Complete root b. Partial root c. Complete stem d. Partial stem
Last Answer : b. Partial root
Description : Which of the following is complete root parasite a. Cuscuta b. Loranthus c. Striga d. Orobanche
Last Answer : d. Orobanche
Description : Cuscuta is a (1) partial stem parasite (2) complete stem parasite (3) partial root parasite (4) complete root parasite
Last Answer : complete stem parasite
Description : What is the upper part of the embryonic root called ?
Last Answer : The upper part of the embryonic root is called the hypocotyl.
Description : Which hormone is applied to the root of a plant ?
Last Answer : Auxin hormone is applied to the root of the plant.
Description : Which of the following propagates through the root ?
Last Answer : Patal propagated through roots.
Description : How do plants absorb water through root hairs ?
Last Answer : Answer : Plants absorb water through unicellular root hairs.
Description : What kind of radish root ?
Last Answer : Radish ( Raphanus raphanistrum subsp. sativus) is a staple vegetable.
Description : What if the tip of the root swells with food ?
Last Answer : When the tip of the root is swollen by storing food, it is called kandal.
Description : What is the non-transplanted root of bot tree ?
Last Answer : The non-transformational root of the bot tree is the columnar root
Description : The hypogeal germination is found in: (a) Bean (b) Maize (c) Rhizophora (d) Cucurbita Ans. (b) Directions: In the following questions more than one answer given may be correct select the correct ... (1) Piper-Climbing root (2) Ficus-Climbing root (3) Buttress root-Bombax (4) Vitis-Nodulated root
Last Answer : Ans. ((d))
Description : In onion, the swollen underground structure is: (a) Root (b) Rhizome (c) Bulb (d) Tuber
Last Answer : Ans. ((c))
Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients
Last Answer : Ans. ((a))
Description : Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture
Description : Primary root is: (1) Positively geotropic (2) Positive hydrotropic (3) Negative geotropic (4) Negative hydrotropic
Last Answer : Ans. ((b))
Description : Decot root having more than six vascular bundles are found in (a) Pea (b) Sunflower (c) Ficus (d) Ranunculus
Description : Select the correct statement: (a) Legumes are incapable of fixing nitrogen (b) Legumes fix nitrogen through bacteria living in fruits root (c) Legumes fix nitrogen only by bacteria present in nodules (d) None of the above
Last Answer : Ans. (c)
Description : Root cap is not found n: (a) Mesophytes (c) Hydrophytes (b) Xerophytes (d) Halophytes
Description : Root of L.oldhamia is called as…. a) Sphenopteris hoeninghausii b)Kaloxylon hookeri c)Lagenostoma lomaxii d)Rachiopteris aspera
Last Answer : b)Kaloxylon hookeri
Description : Sphenopteris hoeninghausii is the….. a)stem b)root c)leaves d)ovule
Last Answer : c)leaves
Description : In roots, mitotically and metabolically inactive cells that are positioned just behind the root cap are called as
Last Answer : In roots, mitotically and metabolically inactive cells that are positioned just behind the root cap are called as – Quiescent center
Description : Root apical meristem is best explained by
Last Answer : Root apical meristem is best explained by – Histogen theory
Description : Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion
Last Answer : a) Formation of root nodules
Description : Root suckers are a) Insects that suck nutrients from the roots of plants b) Shoots that arise from roots to form new plant c)New plant parts that arise from the branches of fruit trees d) Roots of neighboring plants that share water with the another plant
Last Answer : b) Shoots that arise from roots to form new plant
Description : Define aereole and give an example.
Last Answer : Ans: Aereole is elevated region on the Phylloclade of Opuntia which represents a node and consists of spinous modified leaves. The spines are normal spines and hair like spines known as barbs.
Description : Which group of Plants are called Amphibians of the plant kingdom and give an example.
Last Answer : Ans: Bryophytes are called as Amphibians of the Plant Kingdom. Example is Funaria.
Description : To which family the petro plants belong and give an example.
Last Answer : Ans: Petro plants belong to family Euphorbiaceae. Example is Jatropa
Description : Define self sterility. Give an example
Last Answer : Ans: It is failure of germination of pollen grains on the stigma of the same flower. Ex: Orchids, Passiflorea, Abutilon
Description : What are alleles? Give an example.
Last Answer : Ans: Alternative forms for a gene are called as alleles. Ex: The alleles for length of stem are T and t.
Description : The plant that behaves as a root parasite is - (1) Ficus (2) Santalum (3) Cuscuta (4) Euphorbia
Last Answer : (3) Cuscuta Explanation: Plants which either obtain readymade organic food prepared by other plants or absorb water and minerals from other plants to prepare their own organic food are called parasitic plants. Cuscuta (Doddar) is a total stem parasite.
Description : Angiosperm, to which the largest flowers belong, is (a) total root parasite (b) partial root parasite (c) total stem parasite (d) partial stem parasite.
Last Answer : (a) total root parasite
Description : The partial root parasite a). Cuscuta b). Loranthus c). Striga d). Orobanche
Last Answer : c). Striga
Description : The plant that behaves as a root parasite is (1) Ficus (2) Santalum (3) Cuscuta (4) Euphorbia
Last Answer : Cuscuta
Description : Vegetative propagation is an example of
Last Answer : Vegetative propagation is an example of – Recurrent apomixis
Description : Nutmeg is an example of
Last Answer : Nutmeg is an example of – Ruminate endosperm
Description : Define marcescent and acrescent calyx and an example to each.
Last Answer : Ans: Persistant calyx that does not show development after fertilization is marcescent calyx. Ex: Solanum melongena. Persistant calyx that shows development even after fertilization is called as Acrescent calyx. Ex: Physalis
Description : What cross is useful in determining the genetic purity of gametes? Show with an example.
Last Answer : Ans: Test cross. If it is done between an individual with Tt genotype and the recessive parent with tt genotype, 50% of the individuals obtained will be tall and the remaining are dwarf.
Description : Example of natural vegetative propagation does not include a) Corals b) bulbs c) corms d) rhizomes
Last Answer : a) Corals
Description : Example of plant in which vegetative propagation is occurred by leaves is called a) Cannabisn b) Chrysanthemum c) Cryophyllum d) Brassica
Last Answer : c) Cryophyllum
Description : A common example of stem tuber is a) Ginger b) Garlic c) Onion d) Potato
Last Answer : d) Potato
Description : Example of a digenetic parasite a) Entamoeba b) Enterobium c) Planaria d) schistosoma
Last Answer : d) schistosoma
Description : Give an account on the structure and function of tRNA
Last Answer : Ans: Transfer RNA is the smallest among the RNAs. It is also known as adaptor RNA or decoding RNA or soluble RNA. It accounts for 10 - 15% of total cellular RNA. It consists of 80 - 90 ... significance. tRNA brings the aminoacids to the surface of ribosomes at the time of protein synthesis.
Description : With the help of labeled diagram give an account of the cell organelle which is generally referred as Cell brain.
Last Answer : Ans: Nucleus is the controlling centre of the cell that consists of chromosomes. Structurally it has four parts known as Nuclear envelope, Nucleoplasm, Nucleolus and Chromatin. Nuclear ... chromosome at secondary constriction. It also disappears in Prophase and reappears in telophase.
Description : Give an account on suicidal bags of the cell.
Last Answer : Ans: These are Lysosomes. They have single unit membrane and formed from E.R. and Golgi complex. These were discovered by de Duve. They are rich in hydrolytic enzymes and play a role in digestion. ... lysosomes can destroy the contents of the same cell they are called as Suicidal bags of the cell.
Description : What are the three types of styles? Give examples.
Last Answer : Ans: The three types of styles are 1. Terminal – Ex: Datura, 2. Lateral – Ex: Mangifera, 3. Gynobasic – Ex: Ocimum
Description : What is Polygamous condition and give two examples.
Last Answer : Ans: Polygamous condition is presence of male, female and bisexual flowers on the same plant. Ex: Mangifera, Polygonum
Description : Which aerial stem modification is concerned with vegetative propagation? Give two examples.
Last Answer : Ans: Bulbils. Ex: Agave americana, Dioscoria bulbifera
Description : What are fasciculated roots? Give two examples.
Last Answer : Ans: Tuft of storage adventitious roots are called as fasciculated roots. Ex: Asparagus, Dahlia