Description : .In Pinus, the wings of the seed develops from (a) ovuliferous scale (b) integument (c) nucellus (d) bract.
Last Answer : (a) ovuliferous scale
Description : Distinguish between microsporophyll and megasporophyll.
Last Answer : Microsporophyll They are structures that produce the male gametes called microspores Megasporophyll They are structures that produce female structures called megaspores.
Description : What are microsporophyll and megasporophyll?
Last Answer : Microsporophylls are the numerous structures in the male cone of gymnosperms that produce the male gametes. Megasporophylls are the structures in the female cone of gymnosperms that produce ovule containing female gametes.
Description : Embryo sac represents: (a) Megaspore (b) Megagamete (c) Megasporophyll (d) megagametophyte
Last Answer : Ans. ((d))
Description : The ovule of an angiosperm is technically equivalent to (a) megasporangium (b) megasporophyll (c) megaspore mother cell (d) megaspore.
Last Answer : (a) megasporangium
Description : Cross between hybrid and recessive parent is: (a) Back cross (b) Test cross (c) Monohybrid cross (d) Dihybrid cross Ans. (b) ................................................----- ... - PMT, AIIMS, MBBS,lucknow 1. Largest egg of plant kingdom belongs to: (a) Cycas (b) Pinus (c) Psidium (d) Mangfera
Last Answer : Ans. ((a))
Description : The species of Pinus, seeds of which are edible is/ chilgoza comes from: (a) P. roxburghii (b) P. gerardiand (c) P. monophylla (d) P. sylvestris
Last Answer : Ans. ((b))
Description : What tissue present in leaves of Pinus conducts food and water laterally? (a) Transfusion tissue (b) Phloem (c) Xylem (d) Medullary rays
Description : Rubber is commercially obtained from: (a) Euphorbia (b) Betula (c) Hibiscus (d) Pinus
Description : Number of cotyledons in Zea mays, Cycas and Pinus respectively are: (a) 1, 2, 4 (b) 1, 2, many (c) 2, 2, many (d) 2, 1, 4
Description : Which of the following species of Pinus has trifoliar spur…. a) P. sylvestris b) P. merkusii c) P. gerardiana ' d) P. wallichiana
Last Answer : c) P. gerardiana '
Description : Which of the following species of Pinus is commonly known as chir pine ......... a) P. roxburghii b) P. wallichiana c) P. insularis d) P. gerardiana
Last Answer : a) P. roxburghii
Description : Which of the following species of Pinus is not found in India ............. a) Pinus merkusii b) P. gerardiana c) P. wallichiana d) P. maritima.
Last Answer : d) P. maritima.
Description : The resin duct in Pinus stem represents a................ a)large vacuole b)intercellular space c)lysigenous cavity d)schizogenous cavity.
Last Answer : d)schizogenous cavity.
Description : In Pinus pollination is........... a)anemophilous b)hydrophilons c)zoophilons d)cheriopterous.
Last Answer : a)anemophilous
Description : Cycadeoidea is also known as…. a)Lyginopteris b)Bennettites c) Pinus d)Gnetum
Last Answer : b)Bennettites
Description : The ovule in which embryo sac become horse shoe shaped in: (a) Amphitropous (b) Camphylotropous (c) Orthotropous (d) Anatropous Ans. (a) .................................. ... TEST SAMPLE QUESTIONS 1. Caruncle develops-from: (a) Outer integument (b) Ctyledon (c) Funiculus (d) Inner integuments
Description : The archesporium of ovule is (a) Single celled terminal (b) Single celled central (c) Single celled hypodermal (d) Single celled lateral Ans. (c) ..................... ... formed after one fertilization (3) Seed is formed before double fertilization (4) Fruit is produced after double fertilization
Last Answer : Ans. ((c))
Description : Sphenopteris hoeninghausii is the….. a)stem b)root c)leaves d)ovule
Last Answer : c)leaves
Description : When polyembryony is due to activation of some sporophytic cells of ovule, it is called as
Last Answer : When polyembryony is due to activation of some sporophytic cells of ovule, it is called as – Adventive polyembryony
Description : The most primitive type of ovule is found in
Last Answer : The most primitive type of ovule is found in – Orthrotropus
Description : Describe the structure of ovule with the help of neat labeled diagram
Last Answer : Ans: Ovules are seen in flowering plants. In Gymnosperms they are exposed and in angiosperms they are enclosed. Typical ovule has a stalk known as Funiculus and ovule body. ... as in Monocots and Polypetalae and ategmic without integuments as in parasites such as Balanophora, Loranthus.
Description : If a dwarf pea plant was treated with gibberellic acid, it became as tall, as tall pea plants. If these pea plants are crossed with pure tall pea plants, what will be the phenotypic ratio in F1 generation? ... (b) 50% tall and 50% dwarf plants (c) 75% tall and 25% dwarf plants (d) 100% tall plants
Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients
Description : Radial zonation of shoot apex is found in
Last Answer : Radial zonation of shoot apex is found in – Gymnosperms
Description : The Apical shoot meristem of Angiosperms consists of
Last Answer : The Apical shoot meristem of Angiosperms consists of – Tunica, Carpus and leaf primordium
Description : First bionisecticide developed on commercial scale was: (a) Quinine (b) DDT (c) Organophosphates (d) Sporeine
Description : Embryo sac represents (a) megaspore (b) megagametophyte (c) megasporophyll (d) megagamete.
Last Answer : b) megagametophyte
Description : Besides paddy fields, cyanobacteria are also found inside vegetative part of (a) Equisetum (b) Psilotum (c) Pinus (d) Cycas
Last Answer : (d) Cycas.
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 part of the brain controls respiration ?
Last Answer : The medullary part of the brain controls respiration.
Description : What is the upper part of the embryo called ?
Last Answer : : It is called epicotyl.
Description : What is the lower part of the embryo called ?
Last Answer : The lower part of the embryonic stem is called epicotyle.
Description : What is the elongated part ?
Last Answer : : The branches that originate from the cell body are called elongated parts.
Description : In moss, the middle sterile part of capsule is called: (a) Foot (b) Protonema (c) Columella (d) Spore sac
Description : Durable part of the wood is called as
Last Answer : Durable part of the wood is called as – Heartwood
Description : In hybridization this is not part of the technique used a) Transfer pollen b) Collect pollen c) Emasculate d) Use of two plants to bridge the stems together
Last Answer : d) Use of two plants to bridge the stems together
Description : Which flower part develops from the ovule and is surrounded by the fruit?
Last Answer : C. seed
Description : Embryo sac occurs in (a) embryo (b) axis part of embryo (c) ovule (d) endosperm.
Last Answer : (c) ovule
Description : The part of the flower that is adapted to catch pollen is the: a) stigma b) style c) anther d) ovule
Last Answer : ANSWER: A -- STIGMA
Description : My pinus nigra is loosing a lot of interior needles. Is it sick
Last Answer : Need Answer
Description : $ Hypnospores are the thick walled resting spores produced in some Algae. ! The megaspores of Pinus are also called hypnospores.
Last Answer : $ Hypnospores are the thick walled resting spores produced in some Algae. ! The megaspores of Pinus are also ... wrong D. If both As and R are wrong.
Description : Give the economic importance of Cycas and Pinus.
Last Answer : Give the economic importance of Cycas and Pinus.
Description : Classify the following into gymnosperms and angiosperms. Wheat, pinus, bean, Cycas
Last Answer : Pinus, Cycas – Gymnosperms Wheat, bean – Angiosperms
Description : Give a detailed note on Pinus?
Last Answer : Habitat: - Pinus is found growing at an altitude of 5000-8000 feet. Structure: - i) It is sporophyte, evergreen and quite tall tree. ii) It consists of extensive root system and strong ... the plant. iv) When it matures the cones open and seeds are set free and dispersed.
Description : Which of the following tree is commonly used in the landscape of arid zone? a. Ficus benjamina b. Pethocelobium dulce c. Pinus longifolia d. Prosopis juliflora
Last Answer : Prosopis juliflora
Description : Winged pollen grains are present in (a) mustard (b) Cycas (c) mango (d) Pinus
Last Answer : (d) Pinus.
Description : Which one of the following plants is monoecious? (a) Pinus (b) Cycas (c) Papaya (d) Marchantia
Last Answer : (a) Pinus
Description : Which one of the following is monoecious? (a) Marchantia (b) Cycas (c) Pinus (d) Date palm
Last Answer : (c) Pinus
Description : Water containing cavities in vascular bundles are found in (a) sunflower (b) maize (c) Cycas (d) Pinus.
Last Answer : (b) maize