Plant kingdom Quiz-11
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. When moss spores germinate, the form
Solution
(c) In mosses the first stage is protonema stage, which develops directly from a spore
(c) In mosses the first stage is protonema stage, which develops directly from a spore
Q2. The protonema is a stage in the life cycle of
Solution
(b) The protonema is a stage in the life cycle of Funaria. Protonema is the juvenile stage of moss. It results from the germinating meiospore
(b) The protonema is a stage in the life cycle of Funaria. Protonema is the juvenile stage of moss. It results from the germinating meiospore
Q3. Gymnosperms include
Solution
(d) Gymnosperms include medium sized trees or tall trees and shrubs. One of gymnosperms, the gaint red wood tree Sequoia is one of the tallest trees species
(d) Gymnosperms include medium sized trees or tall trees and shrubs. One of gymnosperms, the gaint red wood tree Sequoia is one of the tallest trees species
Q4. Read carefully the following statements I. possesses unicellular and unbranched rhizoids II. Gemmae are asexual buds, which originate from small receptacles called gemma cups III. The plants have magnificent property of retaining water IV. Mosses along with lichens are the first organisms to colonise rocks Which of the statements given above are correct?
Solution
(c) The rhizoids in Funaria arise from the basal region of the stem, which functions as roots. These are multicellular and branched. The gemmae are multicellular, green and biconvex lens shaped bodies produced in gemma cup. Sphagnum is used as a packing material in the transportation of flower, live plants, tubers, bulbs seedlings, etc. It is also used in seed-beds and in moss-sticks. Mosses colonise on barren rocks along with lichens decompose rocks
(c) The rhizoids in Funaria arise from the basal region of the stem, which functions as roots. These are multicellular and branched. The gemmae are multicellular, green and biconvex lens shaped bodies produced in gemma cup. Sphagnum is used as a packing material in the transportation of flower, live plants, tubers, bulbs seedlings, etc. It is also used in seed-beds and in moss-sticks. Mosses colonise on barren rocks along with lichens decompose rocks
Q5. Antherozoids dryopteris of are
Solution
(a) The antherozoids of are large, coiled and multiflagellate structures which have a prominent vesicle and a nucleus.
(a) The antherozoids of are large, coiled and multiflagellate structures which have a prominent vesicle and a nucleus.
Q6. After fertilisation the ovules develop into
Solution
(c) After fertilisation ovules develop into seeds and ovaries develop into fruit
(c) After fertilisation ovules develop into seeds and ovaries develop into fruit
Q7. In gymnosperm the microspores develop into a male gametophyte generation which
Solution
(a) In gymnosperm, microspores develop into a male gametophytic generation, which is highly reduced and is confined to only a limited number of cell. This reduced gametophyte is called a pollen grain. Its development takes place in microsporangia
(a) In gymnosperm, microspores develop into a male gametophytic generation, which is highly reduced and is confined to only a limited number of cell. This reduced gametophyte is called a pollen grain. Its development takes place in microsporangia
Q8. Corolloid roots are found in
Solution
(c) Corolloid root is developed in Cycas. It contain an algae zone in the cortex. This algal zone contains blue-green algae (cyanobacteria) like Nostoc, Anabaena, which grow in symbiotic association with corolloid root
(c) Corolloid root is developed in Cycas. It contain an algae zone in the cortex. This algal zone contains blue-green algae (cyanobacteria) like Nostoc, Anabaena, which grow in symbiotic association with corolloid root
Q9. In gymnosperm, the leaves are well-adapted to withstand extremes of temperature, humidity and wind. What are the xeric characters in conifers?
Solution
(d) The leaves in case of gymnosperms are well adapted to with stand extremes of temperature, humidity and wind. These shapes are xeromorphic adaptations because they reduce the amount of surface area available for evaporation. They have many other xeromorphic adaptation, which include a thick cuticle, sclerified epidermal cells, sunken stomata, a sclerotic hypodermis, tightly packed mesophyll, an endodermis, few or no lateral veins and centrally located vascular tissue
(d) The leaves in case of gymnosperms are well adapted to with stand extremes of temperature, humidity and wind. These shapes are xeromorphic adaptations because they reduce the amount of surface area available for evaporation. They have many other xeromorphic adaptation, which include a thick cuticle, sclerified epidermal cells, sunken stomata, a sclerotic hypodermis, tightly packed mesophyll, an endodermis, few or no lateral veins and centrally located vascular tissue
Q10. Identify the wrong statements
Solution
(d) The double fertilisation was discovered by SG Nawaschin (1898) and Guignard in Lilium and Fritilaria. Double fertilisation is restricted only to angiosperms. When pollen tube enters ovule, it strikes one of the synergids and burst open to release the two male gametes, which fuse with two different structures in the same female gametophyte. Thus, double fertilisation can be distinguished as. (i) Generative Fertilisation Fusion of one male gamete with the egg producing diploid zygote or oospore (ii) Vegetative Fertilisation Fusion of nucleus of second male gamete with the diploid secondary (fused) nucleus or the triple fusion, i.e., fusion of one male nucleus and two polar nuclei forming endosperm (3)
(d) The double fertilisation was discovered by SG Nawaschin (1898) and Guignard in Lilium and Fritilaria. Double fertilisation is restricted only to angiosperms. When pollen tube enters ovule, it strikes one of the synergids and burst open to release the two male gametes, which fuse with two different structures in the same female gametophyte. Thus, double fertilisation can be distinguished as. (i) Generative Fertilisation Fusion of one male gamete with the egg producing diploid zygote or oospore (ii) Vegetative Fertilisation Fusion of nucleus of second male gamete with the diploid secondary (fused) nucleus or the triple fusion, i.e., fusion of one male nucleus and two polar nuclei forming endosperm (3)
