Reproduction in flowering plants Quiz-10
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.
Dicot embryo consists of
Solution
(b) Dicot embryo has radicle, plumule, cotyledons and sometimes endosperm.
(b) Dicot embryo has radicle, plumule, cotyledons and sometimes endosperm.
Q2.
Find out the odd one.
Solution
(d) Pollen grain is male reproductive part of angiospermic plant while embryo sac, micropyle and nucellus are female reproductive parts.
(d) Pollen grain is male reproductive part of angiospermic plant while embryo sac, micropyle and nucellus are female reproductive parts.
Q3.
Fertilization of egg takes place inside
Solution
(d) Fertilization of egg takes place inside embryo sac because egg is the part of embryo sac.
(d) Fertilization of egg takes place inside embryo sac because egg is the part of embryo sac.
Q4.
The fertilization in which male gametes are carried through pollen tube, is known as
Solution
(c) Fusion of male and female gametes (i.e, syngamy) in seed plants, occurs through siphonogamy as the gametes are carried through the pollen tube. Pollen tube can enter the ovule by three methods: 1.Porogamy- through micropyle 2.Chalazogamy- through chalaza 3.Mesogamy –pollen tube penetrates laterally through integuments or funiculus.
(c) Fusion of male and female gametes (i.e, syngamy) in seed plants, occurs through siphonogamy as the gametes are carried through the pollen tube. Pollen tube can enter the ovule by three methods: 1.Porogamy- through micropyle 2.Chalazogamy- through chalaza 3.Mesogamy –pollen tube penetrates laterally through integuments or funiculus.
Q5.
In embryo sac the number of → synergid → egg cell → central cell → antipodal cell follows the order
Solution
Q6.
Number of microsporangia in an angiospermic anther is
Solution
(d) Each theca contains two microsporangia so total four microsporangia present in angiospermic anther
(d) Each theca contains two microsporangia so total four microsporangia present in angiospermic anther
Q7.
Which type of pollen grains are found in insect pollinated flowers?
Solution
(b) Insect pollinated flowers are light sticky, colourful with characteristic smell and produce nectar. The pollination by insects is termed as entomophily. The terms like myrmeophily, cantharophily are used for pollination by ants and beetles, respectively.
(b) Insect pollinated flowers are light sticky, colourful with characteristic smell and produce nectar. The pollination by insects is termed as entomophily. The terms like myrmeophily, cantharophily are used for pollination by ants and beetles, respectively.
Q8.
Occurrence of more than one embryo is called
Solution
(a) Occurrence of more than one embryo is called polyembryony. It is generally formed in family-Citraceae. Orange and lemon are common examples of polyembryony in which nucellar polyembryony is formed
(a) Occurrence of more than one embryo is called polyembryony. It is generally formed in family-Citraceae. Orange and lemon are common examples of polyembryony in which nucellar polyembryony is formed
Q9.
Pollen grains can cause
Solution
(a) Pollen grains of many species cause severe allergies and bronchial afflications. In some people often leading to chronic respiratory disorders, i.e., asthma, bronchitis, etc. Remember that Parthenium or carrot grass that came to India as a contaiminant with imported wheat has become obiquitous in occurance and cause pollen allergy
(a) Pollen grains of many species cause severe allergies and bronchial afflications. In some people often leading to chronic respiratory disorders, i.e., asthma, bronchitis, etc. Remember that Parthenium or carrot grass that came to India as a contaiminant with imported wheat has become obiquitous in occurance and cause pollen allergy
Q10.
A typical dicotyledonous embryo consist of an …A… axis and …B… cotyledons.
The portion of embryonal axis above the level of cotyledons is …C… which terminates with the …D… or stem tip
A, B, C, D in the above statement are
Solution
(b) A- Embryonal axis, B- cotyledons, C- Epicotyle, D- Plumule
(b) A- Embryonal axis, B- cotyledons, C- Epicotyle, D- Plumule
