Free Kingdom Plantae MCQs with Answers

391. Which one is microsporangium?

• A. Pollen grains
• B. Stamens
• C. Pollen sacs
• D. Female cone

Explanation: Pollen sacs, also known as microsporangia, are structures found within the anthers of stamens. They are responsible for producing and containing the microspores, which develop into pollen grains.

392. Club-mosses are also called

• A. Psilopsida
• B. Sphenopsida
• C. Lycopsida
• D. Pleropsida

Explanation: The correct answer is Lycopsida. Club-mosses belong to the class Lycopsida, which is a group of vascular plants that have microphylls and reproduce using spores. The other options, such as Psilopsida and Sphenopsida, refer to different classes of plants within the plant kingdom. Pleropsida is not a valid classification.

393. In grapes and mangoes, the INFLORESCENCE is

• A. panicle
• B. multiparous cyme
• C. capitulum
• D. umbel

Explanation: A panicle is a branched inflorescence in which each branch has more than one flower. Major examples of plants having such inflorescences are grapes and mangoes. They are shown below, respectively.

394. A sporophyte that depends on gametophytes is:

• A. Adlantum
• B. Pinus
• C. Marchantia
• D. Mustard-plant

Explanation: Bryophytes (mosses, liverworts and hornworts) have dominant gametophyte phase on which the adult sporophyte is depended for nutrition. Marchantia is a type of bryophyte.

395. In angiosperms the megaspore develops into:

• A. Embryo-Sac
• B. Embryo
• C. Seed
• D. Male gametophyte

Explanation: The functional megaspore grows into an Embryo sac in angiosperms.

396. All of the following plants posses hermaphrodite flowers except:

• A. Lathyrus odoratus
• B. Solanum nigrum
• C. Zea mays
• D. Avena sativa

Explanation: Zea-Mays (corn) are a monoecious plant, a hermaphrodite, where both the male and female reproductive parts are present in the same plant.

397. A spore of Fern plant develops into:

• A. Zygote
• B. Sporophyte
• C. Gametophyte
• D. Prothalus

Explanation: Released spores grow into a gametophyte which is a very small heart shaped structure.

398. All of the following are gametophytes except:

• A. Club Mosses
• B. Funaria
• C. Liver-Worts
• D. Horn-Worts

Explanation: In Club mosses also called lycopsids, the gametophyte is mainly underground.

399. All of the following are dioecious except:

• A. Ulva
• B. Funaria
• C. Marchantia
• D. Polytrichum

Explanation: Funaria (cord moss) is a bryophyte. Funaria is monoecious and autoecious i.e., male and female reproductive structures develop on different branches of the same plant.

400. Dicotyledonous flowers are usually:

• A. Clmerous
• B. Trimerous
• C. Tetramerous
• D. Pentamerous

Explanation: Flowering plants are divided into two broad groups by botanists: monocots and dicots. The distinction between the two is made based on the number of cotyledons present in the seed after the plant germinates. As their names suggest, monocots have one cotyledon, while dicots have two. In pentamerous flowers, the floral parts are either arranged in five or even multiples of five. The dicotyledonous flower commonly has a pentamerous symmetry.