Home
Class 12
BIOLOGY
Sundew is (a) Dionaea (b) Nepenthes ...

Sundew is
(a) Dionaea
(b) Nepenthes
(c) Drosera
(d) Striga

A

Dionaea

B

Nepenthes

C

Drosera

D

Striga

Text Solution

AI Generated Solution

The correct Answer is:
To determine what "Sundew" refers to among the given options, we can analyze each option step by step: 1. **Option (a): Dionaea** - Dionaea is commonly known as the Venus flytrap. It is an insectivorous plant that captures prey using a specialized leaf structure that snaps shut when triggered by an insect. However, this plant is not referred to as "Sundew." Therefore, this option is incorrect. **Hint:** Think about the common names of plants and their characteristics. 2. **Option (b): Nepenthes** - Nepenthes is known as the pitcher plant. This plant has modified leaves that form a deep cavity filled with liquid, which traps insects. Like Dionaea, Nepenthes is also an insectivorous plant, but it is not called "Sundew." Thus, this option is also incorrect. **Hint:** Identify the unique trapping mechanism of each plant. 3. **Option (c): Drosera** - Drosera is the scientific name for the Sundew plant. It is characterized by its glandular leaves that secrete a sticky mucilage resembling drops of dew, which helps to trap insects. This is the correct identification of Sundew. **Hint:** Look for the plant that has a name directly associated with "dew." 4. **Option (d): Striga** - Striga is commonly known as witchweed. It is a parasitic plant that attaches to the roots of other plants. It does not have any relation to the term "Sundew," making this option incorrect. **Hint:** Consider the nature of the plant and whether it is insectivorous or parasitic. **Final Answer:** The correct answer is (c) Drosera. ---
Promotional Banner

Topper's Solved these Questions

  • DIVERSITY IN ANGIOSPERM MORPHOLOGY

    DINESH PUBLICATION ENGLISH|Exercise Revision Question from competitive exams|63 Videos

  • DIVERSITY IN ANGIOSPERM MORPHOLOGY

    DINESH PUBLICATION ENGLISH|Exercise Check your Grasp|10 Videos

  • DIGESTION AND ABSORPTION

    DINESH PUBLICATION ENGLISH|Exercise CYG|10 Videos

  • ECHINODERMATA

    DINESH PUBLICATION ENGLISH|Exercise REVISION QUESTIONS|65 Videos

Similar Questions

Explore conceptually related problems

Heterotrophic nutrition is found in (a) Pistia (b) Vallisnaria (c) Drosera (d) Opuntia

Nepenthes, Dionaea, Drosera and Utricularia are

Which ones show stipular modifications (a) Spines of Zizyphus (b) Tendrils in Smilax (c) Tendrils in Nepenthes (d) Spines in Argemone (e) Thorn in Bougainvillea

Select the incorrect match from the following . (a) Phyllode - Acacia (b) Leaf spine - Pea (c) Storage leaf - Onion (d) Leaf pitcher - Nepenthes

Closure of lamina in Venus Fly Trap (Dionaea muscipula) after an insect happens to alight over it is (A) Thigmotropism (B) Haptonasty (C) Chemotropism (D) Chemonasty

What is common to the following plants: Nepenthes Psilotum, Rauwolfia and Aconitum ? (a) All are ornamental plants. (b) All are phylogenic link species. (c) All are prone to over exploitation. (d) All are exclusively present in the Eastern Himalayas.

Diagonal A C\ a n d\ B D of trapezium A B C D , in which A B || D C , intersect each other at Odot The triangle which is equal in area of A O D is A O B (b) B O C (c) D O C (d) A D C

If (cosx)/a=(cos(x+theta))/b=(cos(x+20))/c=(cos(x+3theta))/d then (a+c)/(b+d) is equal to (a) a/d (b) c/b (c) b/c (d) d/a

Fill in the blanks : (iii) If (a)/(b) is additive inverse of (-c)/(d) , then (-c)/(d) is additive inverse of ………………… . And so (a)/(b)+((-c))/(d)=((-c))/(d)+(a)/(b)= …………………… .

If the equation (a^2+b^2)x^2-2(a c+b d)x+c^2+d^2=0 has equal roots, then (a) a b=c d (b) a d=b c (c) a d=sqrt(b c) (d) a b=sqrt(c d)