Tag: gymnosperms

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Questions Related to gymnosperms

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Which class is included under gymnosperms?

  1. Cycadopsida

  2. Pteropsida

  3. Sphenopsida

  4. Lycopsida

  5. Bryopsida
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cycadopsida is a class within the division Gymnospermae. The other options listed (Pteropsida, Sphenopsida, Lycopsida) are classes of Pteridophytes.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Maiden Hair Tree is ________

  1. Bottle Brush

  2. Araucaria

  3. Ginkgo

  4. Juniperus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ginkgo biloba is commonly known as the Maidenhair tree. It is a unique species of gymnosperm with no living relatives.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Gymnosperms with vessels are ________

  1. Cycadales

  2. Coniferales

  3. Gnetales

  4. Ginkgoales
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gnetales are unique among gymnosperms because they possess vessels in their xylem, a trait typically associated with angiosperms.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

A bushy trailing herbaceous gymnosperm is 

  1. Cedrus

  2. Cycas

  3. Pinus

  4. Ephedra
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ephedra is a bushy trailing, climbing or creeping herbaceous gymnosperm. It is a genus of gymnosperm shrubs. It is used as medicine for treating asthma, hay fever and cold. 

Thus, the correct answer is option D.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Which one pair of examples will correctly represent the grouping Spermatophyta according to one of the schemes of classifying plants : -

  1. Acacia, Sugarcane

  2. Pinus, Cycas

  3. Rhizopus, Triticum

  4. Ginkgo, Pisum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Spermatophyta includes seed-bearing plants and this includes gymnosperms and angiosperms. Acacia and sugarcane both are angiosperms. Pinus and Cycas both are gymnosperms. Rhizopus belongs to kingdom fungi and Triticum is an angiosperm. Ginkgo is a gymnospermic plant so it comes before angiospermic plant, Pisum (pea). Rhizopus is a fungus and Triticum (wheat) is an angiospermic plant. Option 'b' has both angiospermic plants and option 'D' has both gymnospermic plants.

So, the correct answer is 'Ginkgo, Pisum'.
Multiple choice gymnosperms pictorial feature of plant kingdom biology

Read the following statement (A-E) and answer the question which follows them.

(A) In liverworts, mosses, and ferns, gametophytes are free-living
(B) Gymnosperms and some ferns are heterosporous.
(C) Sexual reproduction in Fucus, Volvox, and Albugo is oogamous.
(D) The sporophyte in liverworts is more elaborate than that in mosses.
(E) Both, Pinus and Marchantia are dioecious.

How many of the above statements are correct?

  1. Two

  2. Three

  3. Four

  4. One
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Gametophytes of liverworts, mosses, and ferns are independent and so are free-living.
  • Gymnosperms and some ferns are heterosporous, meaning has two different types of spores.
  • Sexual reproduction in Fucus, Volvox, and Albugo is monogamous meaning they have small flagellated male gamete and large non-flagellated female gamete.
  • The sporophyte of moss is more elaborate than the liverworts.
  • Pinus is monoecious while Marchantia is dioecious.

Thus, the correct answer is option (C), 'Three'.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

The two extinct lines of the gymnosperms which are regarded as an ancestral stock from which the modern gymnosperms might have originated are?

  1. Cordaitales and Bennettitales

  2. Cycadales and Coniferales

  3. Ginkgoales and Cycadales

  4. Gnetales and Coniferales
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Cordaitales and the Benneitales are the two extinct lines of Gymnosperms. The former existed during the paleozoic and early mesozoic era and have been regarded as an ancestral stock from which the modern conifers and Gnetales might have originated.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Ephedrine is obtained by

  1. Ephedra

  2. Gnetum

  3. Pinus

  4. Cycas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ephedrine is a medicinal preparation obtained from the plant Ephedra, a genus of Gymnosperm and the only genus in its family, Ephedraceae, and order, Ephedrales. While there are various species of Ephedra, which are widespread, these are native to North America, south America, southern Europe, Africa central Asia and China. The plants of the genus Ephedra, especially E. sinica has been traditionally  used for a variety of medicinal purposes, including treatment of asthma, common cold and hay fever.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Sequoia belongs to

  1. Cycadofilicales

  2. Gnetales

  3. Coniferales

  4. Dicots
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sequoia trees are evergreen conifers. It is a member of Coniferale, family (also known as Pinnales). It is an evergreen, long-lived, monoecious tree living 1,200–1,800 years or more. It is a typically reddish brown tree with a brownish soft thick bark and are found on the western slopes of California.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Resin canals abundantly occur in 

  1. Conifers

  2. Cycads

  3. Gnetales

  4. Dicots
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The conifers are cone-bearing seed plants. Most are trees, some are shrubs. They are formally the division Pinophyta or Coniferophyta. 

Conifers are gymnosperms. They are cone-bearing seed plants with vascular tissue. All living conifers are woody plants, the great majority being trees. 
Resin canals, sometimes referred to as resin ducts, are unique to conifer. They are technically not individual cells, but are actually open, tube-like spaces bordered by special cells, that have the ability to secrete pitch or resin into the neighboring opening (canal). One of the apparent purposes of these ducts is to protect and seal up a wound by exuding resin to cover the damaged area of the tree.