Self Studies
Self Studies
Self Studies
Self Studies

Reproduction in Organisms Test - 48

Result Self Studies

Reproduction in Organisms Test - 48
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Which one is monoecious?
    Solution

    Depending on the presence and absence of the bisexual flowers, the plants can be classified as monoecious and dioecious. In monoecious plants, the flowers are unisexual but both the pistillate and staminate flowers are present. Pistillate flowers are female flowers and staminate flowers are male flowers. In dioecious plants, either pistillate flowers or staminate flowers are present. In Pinus, both the male cone and female cone are present on the same plant. Hence, the correct answer is 'Pinus'

  • Question 2
    1 / -0
    Flowers having only one set of essential organs are _______.
    Solution
    The essential organs of a flower are those organs that are directly involved in the process of gametes formation and fertilization. The androecium made up of stamens represent the male reproductive part and the gynoecium made up of carpels represent the female reproductive part, these are the essential organs of a flower. The flower that has both of these organs is called perfect or hermaphrodite or bisexual. The flower that has only one, either androecium or gynoecium, is called an imperfect or unisexual flower.
    Hence, the correct answer is 'Unisexual'
  • Question 3
    1 / -0
    A dioecious plant has
    Solution
    A dioecious plant is a unisexual plant because it either has male or staminate flowers or the female or pistillate flowers. Date palm, mulberry, asparagus are some example of dioecious plants. They perform the cross-pollination or the xenogamy. A monoecious plant has both the pistillate and staminate flowers. The plant is bisexual but the flowers are unisexual or incomplete. Corn is an example of a monoecious plant. They perform geitonogamy.
    Hence, the correct answer is 'Either male or female flowers'.
  • Question 4
    1 / -0
    Amphimixis is development of an organism obtained through
    Solution
    The process of fusion between the haploid male nucleus and egg nucleus is known as amphimixis. It is also known as syngamy. The process is known as fertilization which leads to the formation of a diploid zygote. The zygote has double the number of the chromosome to that of haploid gametes. It leads to the recombination of character which causes variation. It is a mode of sexual reproduction.
    So, the correct answer is option C.

  • Question 5
    1 / -0
    Plant of Vallisneria is
    Solution
    Vallisneria is a submerged hydrophyte. It is a dioecious plant with the flowers borne under water. The male flowers detach on maturity and float on the surface of the water while the female flowers grow under water and they come up to the surface with the help of their thin long stalk. As the stalk grows further, the flowers which were vertical become horizontal and thus, a cup like depression is formed around the female flower. The male flowers which are floating on the surface of the water, fall into the cup and due to jerk, the anthers dehisce and pollen is transferred to the stigma and thus, pollination occurs on the surface of the water. This kind of pollination found in Vallisneria is called ephydrophily. 
    So, the correct answer is B.
  • Question 6
    1 / -0
    Onion is propagated through it's 
    Solution
    The asexual reproduction where the vegetative part of the plant which gives rise to a new plant is known as vegetative reproduction. Onion undergoes vegetative propagation by underground bulbs. It is an underground modified stem. It has terminal bud which is enclosed by fleshy scales. Axillary buds occur at different places. The fleshy scales helps in the storage of food. It has adventitious root at the end. During vegetative propagation, the axillary and terminal buds grow into a new stem.
    So, the correct answer is option B.
  • Question 7
    1 / -0
    Development of animal embryo from egg without fertilisation is called
    Solution
    Parthenogenesis is the development of an embryo from a unfertilized egg or if a spermatozoa does penetrate the egg, there is the union of male and female pronuclei.
    Parthenocarpy is the production of fruits without fertilization of fruits. The fruits developed by this technique are seedless.
    The development of 2n gametophyte without meiosis is known as apospory.
    Apomixis is the asexual mode of seed formation.
    So, the correct answer is option A.
  • Question 8
    1 / -0
    It is more economical to propagate Potato and Artichoke through
    Solution
    Propagation of potato and artichoke by tuber is an economical method because of following reason:
    1. It doesn't require any specific training.
    2. The maintenance and caring of the plant is not a costly affair and simply requires moist soil and fertile soil, warm temperature and frequent irrigation during initial stages.
    3. It is not very prone to contamination which contributes to its easy maintenance.
    So, the correct answer is option A.
  • Question 9
    1 / -0
    Banana is multiplied by the means of
    Solution
    Banana posses a unique shoot system. The true stem is present below the soil as modified stem known as a rhizome. The rhizomes develop roots from their nodes and germinate to form true stem which acts as a parent plant. The terminal growing point of the rhizome, the apical meristem, is a flattened dome from which the leaves and the inflorescence are formed. The leaf base known as hyphopodium leads to the production of the thin slender stem-like structure known as suckers above the soil. It grows horizontally in the soil and ultimately comes out to form a new aerial shoot or crown. Each sucker has nodes with scale leaf and axillary bud. 
    So, the correct answer is option C.
  • Question 10
    1 / -0
    If a part of root of Dalbergia is placed in the soil, then it will
    Solution
    Delbergia is a large genus of small to medium size trees and shrubs in the pea family. The roots possess apical meristems at their tips. The meristem is the specialised regions of active cell division. In the presence of water and nutrient from the soil, the roots sprout to form a new plant.
    Therefore, option A is correct.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Selfstudy
Selfstudy
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now