MCQ on chlorophyceae

-

 . Which of the following algae has a cup-shaped chloroplast?

a) Volvox

b) Chlamydomonas

c) Spirogyra

d) Ulothrix


Answer: b) Chlamydomonas



---


2. What type of chloroplast is present in Spirogyra?

a) Cup-shaped

b) Ribbon-shaped

c) Spiral-shaped

d) Reticulate


Answer: c) Spiral-shaped



---


**3. Which of the following is colonial green algae?

a) Chlamydomonas

b) Ulothrix

c) Volvox

d) Spirogyra


Answer: c) Volvox



---


**4. Which of the following algae reproduces through conjugation?

a) Chlamydomonas

b) Spirogyra

c) Volvox

d) Oedogonium


Answer: b) Spirogyra



---


5. What is the habitat of Ulothrix?

a) Marine

b) Freshwater

c) Terrestrial

d) Both a and b


Answer: d) Both a and b



---


**6. Which of the following algae has a girdle-shaped chloroplast?

a) Ulothrix

b) Chlamydomonas

c) Volvox

d) Oedogonium


Answer: a) Ulothrix



---


7. What kind of life cycle is exhibited by Chlamydomonas?

a) Diplontic

b) Haplontic

c) Haplodiplontic

d) None of the above


Answer: b) Haplontic



---


8. In which of the following genera do you find multicellular, unbranched filamentous forms?

a) Chlamydomonas

b) Spirogyra

c) Volvox

d) Euglena


Answer: b) Spirogyra



---


9. The chlorophyll pigments present in Chlorophyceae are:

a) Chlorophyll a and b

b) Chlorophyll a and c

c) Chlorophyll a and d

d) Chlorophyll b and d


Answer: a) Chlorophyll a and b



---


10. Oedogonium is characterized by which of the following features?

a) Colonial algae

b) Unbranched filament with reticulate chloroplast

c) Motile unicellular algae

d) None of the above


Answer: b) Unbranched filament with reticulate chloroplast



---


11. Pyrenoids in Chlorophyceae are mainly associated with:

a) Photosynthesis

b) Protein synthesis

c) Starch storage

d) Respiration


Answer: c) Starch storage



---


12. Which of the following algae is known for its coenobial structure?

a) Chlamydomonas

b) Scenedesmus

c) Ulothrix

d) Spirogyra


Answer: b) Scenedesmus



---


13. The flagella in Chlamydomonas are:

a) Absent

b) 2, apical

c) 4, lateral

d) Numerous


Answer: b) 2, apical



---


14. Which of the following stores food as starch and has cellulose in its cell wall?

a) Chlorophyceae

b) Phaeophyceae

c) Rhodophyceae

d) Bacillariophyceae


Answer: a) Chlorophyceae



---


15. Which algae shows isogamous reproduction?

a) Volvox

b) Ulothrix

c) Oedogonium

d) None of the above


Answer: b) Ulothrix


Popular posts from this blog

e FLORA

-
 Here are some notes on e-flora: What is e-flora? An electronic flora (e-flora) is an online resource that provides information about all plant species of a given geographic area. It is a digital tool that helps in the identification and study of plants. E-floras typically include information such as: Plant descriptions Identification keys Distribution maps Photographs Flowering and fruiting seasons Ecological information Conservation status Benefits of e-flora: Accessibility: E-floras are accessible online, making plant information available to a wider audience, including researchers, students, and nature enthusiasts. Ease of Use: E-floras often have user-friendly interfaces and search functions, making it easy to find specific plant information. Visual Learning: Photographs and illustrations help in the identification and understanding of plant characteristics. Up-to-date Information: E-floras can be updated regularly to reflect new discoveries and taxonomic ...
Read more

CLONING VECTOR

-
Image
A cloning vector is a small, self-replicating piece of DNA that can carry a foreign DNA fragment within its structure 1. These vectors are specifically designed to accommodate the insertion of a DNA segment and maintain it for subsequent analysis or expression studies. Here are key features and types of cloning vectors: Insertion Site: Many cloning vectors have a multiple cloning site (MCS), which is a region containing several unique restriction sites. These sites allow for the precise insertion of a DNA fragment into the vector 1. Selection Marker: To identify successfully transformed cells, cloning vectors often carry a selectable marker, such as antibiotic resistance genes like beta-lactamase or tetracycline resistance operons 6. Reporter Gene: Some vectors include a reporter gene, which allows for the identification of positive transformants even when the selective pressure is removed 1. Elements for Expression: Certain cloning vectors have elements necessary for the expression...
Read more

BOARDER IRRIGATION

-
BOARDER IRRIGATION:- Border irrigation is a method of surface irrigation where a field is divided into a series of rectangular strips by means of earthen dikes or borders . These dikes prevent the mixing of water and soil within each strip, allowing for efficient water distribution and drainage . The technique is particularly suited for certain crop types, such as grasses, legumes, and grass-legume mixtures, and can be adapted for use in precision-graded fields with crops like flat planted or drilled crops .                                       OR A border irrigation system is a type of surface irrigation system that involves dividing a field into long, narrow strips bordered by low ridges. Water is then introduced at the upper end of each strip and allowed to flow downhill, infiltrating the soil as it goes. Border irrigation is best suited for fields with a uniform slope and well-drained soi...
Read more