Plant Kingdom Quiz-16
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. Vegetative reproduction in cycas occurs by
Solution
(a) cycas reproduces vegetatively by forming bulbils or adventitious buds, which differentiated on the main stem. The base of bulbil is swollen and covered by the scale leaves, at its tip a few foliage leaves arise, after detachment they give rise to a new plant.
(a) cycas reproduces vegetatively by forming bulbils or adventitious buds, which differentiated on the main stem. The base of bulbil is swollen and covered by the scale leaves, at its tip a few foliage leaves arise, after detachment they give rise to a new plant.
Q2. Iodine is found in algae
Solution
(d) Brown algae laminaria are rich in sodium, potash and iodine. About 7% of total world production of iodine is obtained from kelps in Japan.
(d) Brown algae laminaria are rich in sodium, potash and iodine. About 7% of total world production of iodine is obtained from kelps in Japan.
Q3. Ramenta is the characteristic of
Solution
In dyopteris the young parts of the leaves and rhizome while in cycas scaly leaves remain covered with small brown hair called ramenta.
In dyopteris the young parts of the leaves and rhizome while in cycas scaly leaves remain covered with small brown hair called ramenta.
Q4. In some pteridophytes, sporophyll form distinct compact structures called ...A… in …B… and …C… Here A, B and C refers to
Solution
In some pteridophytes sporophylls may form distinct compact structure called cone or strobili. ., Selaginella, Equisetum
In some pteridophytes sporophylls may form distinct compact structure called cone or strobili. ., Selaginella, Equisetum
Q5. Storage bodies, pyrenoids in the chloroplast contain
Solution
(a) Protein and starch. Green algae store food in form of starch in specialized structures called pyrenoids located in chloroplast. Each pyrenoid has a central protein called ‘pyrenocrystal’ and a surrounding starch sheath
(a) Protein and starch. Green algae store food in form of starch in specialized structures called pyrenoids located in chloroplast. Each pyrenoid has a central protein called ‘pyrenocrystal’ and a surrounding starch sheath
Q6. Kingdom-Plantae includes
Solution
The kingdom-Plantae includes algae, bryophytes pteridophytes, gymnosperms and flowering plants (angiosperms). They are common on land, on sea shore and in freshwater
The kingdom-Plantae includes algae, bryophytes pteridophytes, gymnosperms and flowering plants (angiosperms). They are common on land, on sea shore and in freshwater
Q7. The 13-celled male gametophyte in sselaginella is
Solution
The 13-celled microspore of male gametophyte in silaginella is sheded from microsporagium, which is having 1-prothallial cell + 8-jacket cells +4-androgonial cells (i.e., 8+4=12 antheridial cells).
The 13-celled microspore of male gametophyte in silaginella is sheded from microsporagium, which is having 1-prothallial cell + 8-jacket cells +4-androgonial cells (i.e., 8+4=12 antheridial cells).
Q8. In pinus the third tier of embryonal cells formed below is known as
Solution
The zygote of pinus immediately germinates. It undergoes a series of mitotic divisions, still enclosed within the ovule to form a relatively elaborated 16 celled proembryo. The four lowermost cells farthest from the micropylar end constitute the embryonal tier, suspensor tier the third tier from below is called the rosette tier.
The zygote of pinus immediately germinates. It undergoes a series of mitotic divisions, still enclosed within the ovule to form a relatively elaborated 16 celled proembryo. The four lowermost cells farthest from the micropylar end constitute the embryonal tier, suspensor tier the third tier from below is called the rosette tier.
Q9. The heart-shaped form of prothallus represents
Solution
Heart-shaped prothallus is a gametophytic stage of fern. It contains male and female reproductive organs, so it is a monoecious structure.
Heart-shaped prothallus is a gametophytic stage of fern. It contains male and female reproductive organs, so it is a monoecious structure.
Q10. Read carefully the following statement about the sexual reproduction in ferns
I. Water is essential for fertilisation
II. Male gametophyte bears antheridia, while female gametophyte bears archegonium, which produces antherozoids and egg cell, respectively
III. Antherozoids and egg cell fuses to give rise zygote. Zygote develops into young embryo. Embryo give rise to sporophyte
Which of the statements given above are correct?
Solution
(d) Male gametophyte bears antheridia, while female gametophyte bears archegonium, which produces, antherozoids and egg cell, respectively. Antherozoids are released in water, where it come in contact of archegonium and egg cell. It fuses with egg cell to produce the zygote. Zygote develops into young embryo
(d) Male gametophyte bears antheridia, while female gametophyte bears archegonium, which produces, antherozoids and egg cell, respectively. Antherozoids are released in water, where it come in contact of archegonium and egg cell. It fuses with egg cell to produce the zygote. Zygote develops into young embryo
