B.Sc.Fy & Sy Botany Home Assignment Hjpm Hnagar
Dear Students
This is to inform you that I have created a quiz assignment for B. Sc FY and SY students on paper 'Gymnosperm and Palebotany' Just click on the link given below and solve the questions.
Regards,
Dr. Shyam L. Ingle
Assistant professor & Head
Dept. Of Botany
Hutatma Jaywantrao Patil Mahavidyalaya, Himayatnagar
Questions and Answers
- 1.
The word gymnosperm was used in 300 BC by:
- A.
Aristotle
- B.
Theophrastus
- C.
Lamark
- D.
None of these
Correct Answer
B. TheophrastusExplanation
Theophrastus is the correct answer because he was a Greek philosopher and botanist who lived from 371-287 BC. He is often referred to as the "Father of Botany" and is known for his extensive studies and writings on plants. The term "gymnosperm" refers to a group of plants that have naked seeds, such as conifers and cycads, and Theophrastus was the first to use this term in his works.Rate this question:
-
- 2.
Most of gymnosperm are:
- A.
Hydrophytic
- B.
Xerophytic
- C.
Halophytic
- D.
Phaeophytic
Correct Answer
B. XerophyticExplanation
Gymnosperms are a group of plants that are adapted to dry and arid environments, making them xerophytic. They have evolved various adaptations to conserve water such as needle-like leaves, thick cuticles, and sunken stomata. These adaptations help reduce water loss through transpiration and allow them to thrive in dry conditions. Gymnosperms are commonly found in regions with low rainfall and high temperatures, such as deserts and arid grasslands. Therefore, the correct answer is xerophytic.Rate this question:
-
- 3.
The ovule in gymnosperm are:
- A.
Unitegmic
- B.
Bitegmic
- C.
Tritegmic
- D.
Tetrategmic
Correct Answer
A. UnitegmicExplanation
In gymnosperms, the ovules are unitegmic, meaning they have a single integument. This is in contrast to angiosperms, where the ovules are usually bitegmic or tritegmic, having two or three integuments respectively. Gymnosperms, such as conifers, have a simpler reproductive structure compared to angiosperms, and their ovules have a single protective layer. This adaptation allows for more direct access to the female gametophyte and facilitates fertilization.Rate this question:
-
- 4.
Gymnosperm lacks ...........
- A.
Naked ovules
- B.
Closed ovules
- C.
Double fertilization
- D.
AC
Correct Answer
D. ACExplanation
Gymnosperms lack both naked ovules and closed ovules. Naked ovules refer to ovules that are not enclosed within an ovary, which is a characteristic of gymnosperms. Closed ovules, on the other hand, are found in angiosperms and are enclosed within an ovary. Double fertilization, which is a unique reproductive process in angiosperms, is also absent in gymnosperms. Therefore, the correct answer is AC, indicating that gymnosperms lack both naked ovules and closed ovules.Rate this question:
-
- 5.
Endosperm of gymnosperm is:
- A.
Haploid
- B.
Diploid
- C.
Triploid
- D.
None of the above
Correct Answer
A. HaploidExplanation
The endosperm of gymnosperms is haploid. The endosperm is a tissue that develops in the seeds of plants and provides nourishment to the developing embryo. In gymnosperms, such as conifers, the endosperm is formed by the fusion of a haploid male gametophyte (pollen) with a haploid female gametophyte (egg). This fusion results in a triploid structure, but the endosperm itself is haploid.Rate this question:
-
- 6.
The phloem in gymnosperm lacks.....
- A.
Sieve tubes
- B.
Companion cell
- C.
Phloem paranchyma
- D.
All of the above
Correct Answer
B. Companion cellExplanation
The phloem in gymnosperms lacks companion cells. Companion cells are specialized cells found in angiosperms that are closely associated with sieve tube elements in the phloem. They provide metabolic support to the sieve tube elements and help in the transport of sugars and other organic compounds. However, in gymnosperms, companion cells are absent, and the phloem lacks this additional support and metabolic function.Rate this question:
-
- 7.
The plant body of cycas is..........
- A.
Gametophytic
- B.
Sporophytic
- C.
Both
- D.
None of these
Correct Answer
B. SporophyticExplanation
Cycas is a type of gymnosperm, which means that it has a sporophytic plant body. Gymnosperms have a dominant sporophyte generation, which is the multicellular, diploid phase of the plant life cycle. The sporophyte produces spores through meiosis, which develop into the gametophyte generation. However, in cycas, the gametophyte is small and dependent on the sporophyte for nutrition and support. Therefore, the correct answer is "Sporophytic."Rate this question:
-
- 8.
Coralloid roots shows symbiotic association with:
- A.
Cynobacteria
- B.
Ectomycorhiza
- C.
Endomycorhiza
- D.
None of these
Correct Answer
A. CynobacteriaExplanation
Coralloid roots show a symbiotic association with cynobacteria. This means that the roots have a mutually beneficial relationship with the cynobacteria. The roots provide a suitable environment for the cynobacteria to live and grow, while the cynobacteria provide the roots with essential nutrients such as nitrogen. This symbiotic association benefits both the roots and the cynobacteria, allowing them to thrive together.Rate this question:
-
- 9.
Leaves of cycas is:
- A.
Monomorphic
- B.
Dimorphic
- C.
Both
- D.
None of these
Correct Answer
B. DimorphicExplanation
Dimorphic means having two distinct forms. In the case of cycas leaves, they can exist in two different forms - pinnate and bipinnate. Pinnate leaves have a single central axis with leaflets arranged on either side, while bipinnate leaves have a secondary axis with leaflets arranged on it. Therefore, the correct answer is "Dimorphic" because cycas leaves can be either pinnate or bipinnate.Rate this question:
-
- 10.
Cycas plant is:
- A.
Monoecious
- B.
Dioecious
- C.
Both
- D.
None of these
Correct Answer
B. DioeciousExplanation
The correct answer is "Dioecious". This means that the Cycas plant has separate male and female reproductive structures on different plants. In other words, some Cycas plants are male and produce pollen, while others are female and produce seeds. This is different from being monoecious, which means having both male and female reproductive structures on the same plant.Rate this question:
-
- 11.
Anatomy of cycas stem vascular bundle is:
- A.
Conjoint
- B.
Open
- C.
Collateral and Endarch
- D.
All of these
Correct Answer
D. All of theseExplanation
The anatomy of the cycas stem vascular bundle is characterized by being conjoint, open, collateral, and endarch. "Conjoint" refers to the fact that the xylem and phloem are present together in the same vascular bundle. "Open" means that the vascular bundle is not enclosed by a protective layer. "Collateral" indicates that the xylem and phloem are arranged side by side within the bundle. "Endarch" means that the xylem is located towards the center of the bundle. Therefore, all of these descriptions apply to the anatomy of the cycas stem vascular bundle.Rate this question:
-
- 12.
Nature of vascular bundle in cycas leaflets is....
- A.
Conjoint
- B.
Collateral and open
- C.
Diploxylic
- D.
All of these
Correct Answer
D. All of theseExplanation
The vascular bundle in cycas leaflets is of all three types: conjoint, collateral, and open. Conjoint vascular bundles consist of xylem and phloem arranged in a single ring, while collateral vascular bundles have xylem on one side and phloem on the other side. Open vascular bundles have no cambium present between xylem and phloem. Cycas leaflets exhibit all these characteristics in their vascular bundles.Rate this question:
-
- 13.
The nature of cycas ovule is......
- A.
Orthrotropus
- B.
Antropus
- C.
Hemianatropus
- D.
Amphitropus
Correct Answer
A. OrthrotropusExplanation
The correct answer is Orthrotropus. Orthrotropus is a term used to describe the nature of the ovule in cycas, which means that the ovule is straight and erect. This is in contrast to other terms like Antropus, Hemianatropus, and Amphitropus, which describe different positions or orientations of the ovule.Rate this question:
-
- 14.
In cycas pollination takes place in:
- A.
Water
- B.
Wind
- C.
Bats
- D.
Birds
Correct Answer
B. WindExplanation
In cycas, pollination takes place through wind. This means that the male cones of the cycas release pollen grains into the air, and these pollen grains are carried by the wind to reach the female cones for fertilization. This method of pollination is known as anemophily and is common in plants that do not rely on animals for pollination. Since cycas does not rely on water, bats, or birds for pollination, the correct answer is wind.Rate this question:
-
- 15.
Pinus belongs to
- A.
Fern
- B.
Mosses
- C.
Conifers
- D.
Cycods
Correct Answer
C. ConifersExplanation
Pinus belongs to the group of plants known as conifers. Conifers are a type of gymnosperm, which means they have naked seeds that are not enclosed in a fruit. They are typically characterized by having needle-like or scale-like leaves and producing cones as their reproductive structures. Pinus, commonly known as pine trees, are a genus of conifers that includes various species found worldwide. They are known for their tall, evergreen trees with needle-like leaves and woody cones.Rate this question:
-
- 16.
Foliage leaves of pinus are known as
- A.
Cataphylls
- B.
Sporophylls
- C.
Needles
- D.
Pinnac
Correct Answer
C. NeedlesExplanation
The correct answer is "Needles" because pinus, commonly known as pine trees, have long, slender leaves that are referred to as needles. These needles are adapted to withstand harsh environmental conditions, such as cold temperatures and low moisture, and they help reduce water loss through their thick waxy coating. The needle-like shape also helps pine trees to shed snow easily, preventing damage to the branches. Therefore, the term "needles" accurately describes the foliage leaves of pinus.Rate this question:
-
- 17.
In pinus vascular bundle are in young stem is.....
- A.
Collateral
- B.
Open
- C.
Conjoint
- D.
AB
Correct Answer
D. ABExplanation
The correct answer is AB, which stands for "Conjoint." In the young stem of Pinus, the vascular bundles are arranged in a conjoint manner. This means that the xylem and phloem are located on the same radial axis within the bundle, with the xylem positioned towards the center and the phloem towards the periphery. This arrangement allows for efficient transport of water and nutrients throughout the stem.Rate this question:
-
- 18.
In pinus vascular bundle shows..... character leaflet
- A.
Hydrophytic
- B.
Xerophytic
- C.
Halophytic
- D.
All of the above
Correct Answer
B. XerophyticExplanation
The correct answer is Xerophytic because xerophytic plants have adaptations to survive in dry environments, such as reduced leaf surface area, thick cuticles, and sunken stomata. These adaptations help to reduce water loss through transpiration. Since the question is asking about the vascular bundle in Pinus, which is a type of coniferous tree known for its adaptation to dry conditions, the answer is xerophytic.Rate this question:
-
- 19.
Wing like pollen grain found in ...
- A.
Cycas
- B.
Pinus
- C.
Gnetum
- D.
All of these
Correct Answer
B. PinusExplanation
The wing-like pollen grain is found in Pinus. This is because Pinus is a gymnosperm, and gymnosperms produce winged pollen grains. These wing-like structures help in the dispersal of pollen by wind, allowing for efficient pollination. Cycas and Gnetum are also gymnosperms, but they do not produce wing-like pollen grains, making Pinus the correct answer.Rate this question:
-
- 20.
Megasporangiate is ..... cones in pinus
- A.
Male cone
- B.
Female cone
- C.
AB
- D.
None of the above
Correct Answer
B. Female coneExplanation
In the context of cones in Pinus, the term "megasporangiate" refers to the female cone. This means that the correct answer is "Female cone". The term "megasporangiate" is used to describe the cones that produce megaspores, which are involved in the reproductive process of the female cone. Male cones, on the other hand, produce microspores. Therefore, the female cone is the appropriate choice for the given question.Rate this question:
-
S.Y.B.Sc. Botany Paper-II (Plant Physiology) Quiz for SVM Someshwarnagar
S.Y.B.Sc. Botany Paper-II (Plant Physiology) Quiz for SVM Someshwarnagar
HSS Dragger Golden Test (Class:11th) (Subject: Botany)
HSS Dragger Golden Test (Class:11th) (Subject: Botany)
12-Botany-Unit-V & VI Plant Physiology & Biology in Human welfare
12-Botany-Unit-V & VI Plant Physiology & Biology in Human welfare
- Aeronautics Quizzes
- Aerospace Quizzes
- Agricultural Science Quizzes
- Astrology Quizzes
- Astronomy Quizzes
- Atom Quizzes
- Biochemistry Quizzes
- Biology Quizzes
- Biomechanics Quizzes
- Biostatistics Quizzes
- Biotechnology Quizzes
- Branches Of Science Quizzes
- Chemistry Quizzes
- Cytology Quizzes
- Easy Science Quizzes
- Ecology Quizzes
- Electrical Quizzes
- Embryology Quizzes
- Endocrinology Quizzes
- Engineering Quizzes
- Environmental Science Quizzes
- Epidemiology Quizzes
- Experiment Quizzes
- Forestry Quizzes
- Fossil Quizzes
- Gas Quizzes
- General Science Quizzes
- Histology Quizzes
- Human Biology Quizzes
- Integrated Science Quizzes
- Invention Quizzes
- Library Science Quizzes
- Lighting Quizzes
- Liquid Quizzes
- Marine Biology Quizzes
- Nature Quizzes
- Neuroscience Quizzes
- Nuclear Science Quizzes
- Oceanography Quizzes
- Physics Quizzes
- Psychology Quizzes
- Science And Technology Quizzes
- Science Glossary Quizzes
- Science Knowledge Quizzes
- Science Practice Quizzes
- Scientific Method Quizzes
- Scientific Notation Quizzes
- Soil Science Quizzes
- Solar System Quizzes
- Solid Quizzes
- Zoology Quizzes
Back to top