Plant Kingdom Quiz-18
Dear Readers,
NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions.
About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus.
Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced.
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Q1. Consider the following statements
I. The liverworts grow usually in moist, shady habitats such as banks of streams, marshy ground, damp soil, bark of trees and deep in the woods
II. The leafy members of liverwort have tiny leaf-like appendages in two rows on the stem-like structures
Choose the correct option
Solution
(c) Both statements are true
(c) Both statements are true
Q2. The cones bearing megasporophyll with ovules are called
Solution
(b) The cones bearing megasporophyll with ovules are called female strobili or megasporangia or macrosporangiate. Both megasporophyll and microsporophyll may be present on same plant (., Pinus) or may be present separately
(b) The cones bearing megasporophyll with ovules are called female strobili or megasporangia or macrosporangiate. Both megasporophyll and microsporophyll may be present on same plant (., Pinus) or may be present separately
Q3. Protonema is the stage in the life cycle of
Solution
Protonema is the juvenile stage of moss resulting from the germinating meiospore and consists of a slender, green, branching system of filaments. In the protonema stage is only vegetative and transitory, which precedes the upright, leafy gametophyte.
Protonema is the juvenile stage of moss resulting from the germinating meiospore and consists of a slender, green, branching system of filaments. In the protonema stage is only vegetative and transitory, which precedes the upright, leafy gametophyte.
Q4. Study the following and identify two characters found in both I. Formation of motile male gametes. II. Formation of haploid endosperm. III. Formation of sporophyte directly from gametophyte without gametic union. IV. Formation of archegonia in female gametophyte. The correct match is
Solution
Haploid endosperm is formed only in while apogamy is found only in
Haploid endosperm is formed only in while apogamy is found only in
Q5.This place in India is called ‘The Golden Mine of Liverworts’.
Solution
(b) The liverworts are widely distributed over the earth’s surface but are far more numerous I the tropics than in other parts of the world. In India, they are abundant in the Western Himalayas, where rainfall is the heaviest.
(b) The liverworts are widely distributed over the earth’s surface but are far more numerous I the tropics than in other parts of the world. In India, they are abundant in the Western Himalayas, where rainfall is the heaviest.
Q6. Embryo sac consists of
Solution
(d) An ideal embryo sac contains 7-cells and 8-nuclei. 3 cells are present at the micropylar end and form egg apparatus, mid of which forms egg cell and rest two lateral form synergids. One cell present in the centre of embryo sac, known as central cell and contains two nuclei and rest three cells are present at chalazal end for antipodal cells
(d) An ideal embryo sac contains 7-cells and 8-nuclei. 3 cells are present at the micropylar end and form egg apparatus, mid of which forms egg cell and rest two lateral form synergids. One cell present in the centre of embryo sac, known as central cell and contains two nuclei and rest three cells are present at chalazal end for antipodal cells
Q7. Pteridophytes are also known as
Solution
(b) Pteridophytes are called vascular cryptogams because among cryptogams the vascular strands are present only in pteridophyte. All the vegetative parts possess vascular tissues (i.e., xylem and phloem)
(b) Pteridophytes are called vascular cryptogams because among cryptogams the vascular strands are present only in pteridophyte. All the vegetative parts possess vascular tissues (i.e., xylem and phloem)
Q8. The endosperm in angiosperms develops from
Solution
(b) Endosperm in angiosperms develops as a fusion product of secondary nucleus with male gamete. Secondary nucleus is diploid structure formed by fusion of haploid chalazal polar nucleus and haploid micropylar polar nucleus. Zygote is formed by the fusion of male gamete with egg
(b) Endosperm in angiosperms develops as a fusion product of secondary nucleus with male gamete. Secondary nucleus is diploid structure formed by fusion of haploid chalazal polar nucleus and haploid micropylar polar nucleus. Zygote is formed by the fusion of male gamete with egg
Q9. Archegoniophore is present in
Solution
(d) IN a bryophyte, the archegonia (female sex organ) are borne on special branches called archegoniophore or female receptacles. Each archegoniophore has rows of archegonia protected by involucre or perichaetium.
(d) IN a bryophyte, the archegonia (female sex organ) are borne on special branches called archegoniophore or female receptacles. Each archegoniophore has rows of archegonia protected by involucre or perichaetium.
Q10. Which of the following plant cells is not surrounded by a cell wall?
Solution
(c) Gamete is the haploid reproductive cell that fuses with another gamete to form a diploid zygote. These are not surrounded by the cell wall. On the other hand, root hair cell stem hair cell and bacterial cell, all possess a well defined cell wall.
(c) Gamete is the haploid reproductive cell that fuses with another gamete to form a diploid zygote. These are not surrounded by the cell wall. On the other hand, root hair cell stem hair cell and bacterial cell, all possess a well defined cell wall.
