CSS Forestry Questions & Answers - Part-1 - Set 14

1)   Halophytes growing on mud are called:

a. Pelophilous
b. Heliophilous
c. Psammophilous
d. Lithophilous
Answer  Explanation 

ANSWER: Pelophilous

Explanation:
No explanation is available for this question!


2)   Plants growing in marsh are called:

a. Halophytes
b. Heliophytes
c. Halophytes
d. Sciophytes
Answer  Explanation 

ANSWER: Halophytes

Explanation:
No explanation is available for this question!


3)   Mark the helophyte:

a. Suaeda fruticosa
b. Cressa cretica
c. Salsola foetide
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!


4)   Plants growing on desert and steppe are called:

a. Oxylophytes
b. Lithophytes
c. Eremophytes
d. Psilophytes
Answer  Explanation 

ANSWER: Eremophytes

Explanation:
No explanation is available for this question!


5)   Plants growing on rocks are called on:

a. Psychrophytes
b. Lithophytes
c. Halophytes
d. Sciophytes
Answer  Explanation 

ANSWER: Lithophytes

Explanation:
No explanation is available for this question!


6)   Plants growing on externally cold soil are called:

a. Halophyte
b. Oxylophyte
c. Psychrophyte
d. Psammophyte
Answer  Explanation 

ANSWER: Psychrophyte

Explanation:
No explanation is available for this question!


7)   The mangrove plants are generally characterised by:

a. Mircophylly
b. Pneumatophores and vivipary
c. Absence of aerenchyma
d. Poor water storage
Answer  Explanation 

ANSWER: Pneumatophores and vivipary

Explanation:
No explanation is available for this question!


8)   Mark the rooted submerged hydrophyte:

a. Potamogeton
b. Najas
c. Ranunculus
d. None of these
Answer  Explanation 

ANSWER: Potamogeton

Explanation:
No explanation is available for this question!


9)   The mesophytes are characterised by:

a. Uniform mesophyll
b. Absence of cuticle
c. Well developed root-shoot systems
d. All of these
Answer  Explanation 

ANSWER: Well developed root-shoot systems

Explanation:
No explanation is available for this question!


10)   Plant groups growing in zones where high temperature alternates with low temperature are called:

a. Megatherms
b. Hekistotherms
c. Microtherms
d. Mesotherms
Answer  Explanation 

ANSWER: Mesotherms

Explanation:
No explanation is available for this question!


11)   In which of the following groups, all the plants belong to the same category?

a. Nymphaea, Poamogeton, Victoria
b. Utricularia, Typha, Aponogeton
c. Lemna, Spirodela, Azolla
d. Ranunculus, Vallisneria, Hydrilla
Answer  Explanation 

ANSWER: Lemna, Spirodela, Azolla

Explanation:
No explanation is available for this question!


12)   The leaves are absent in the xerophyte:

a. Calotropis procera
b. Zizyphis jujuba
c. Acacia nilotica
d. Capparis aphylla
Answer  Explanation 

ANSWER: Capparis aphylla

Explanation:
No explanation is available for this question!


13)   Which of the following feature is found in xerophytes?

a. Equally developed palisade and spongy parenchyma
b. Multistratose epidermis
c. Non-functional stomata
d. None of these
Answer  Explanation 

ANSWER: Multistratose epidermis

Explanation:
No explanation is available for this question!


14)   When a plant first begins to wilts permanently in a pot, its 54.5 gms of soil has 4.5 gms of wter. The PWP of this soil is:

a. 4.50%
b. 9%
c. 8.25%
d. 16.50%
Answer  Explanation 

ANSWER: 9%

Explanation:
No explanation is available for this question!


15)   Euhalophytes grow where the concentration of NaCl ranges:

a. Between 0.1 - 0.5%
b. Between 0.01 - 0.1%
c. Above 1.0%
d. Between 0.5 - 1.0%
Answer  Explanation 

ANSWER: Above 1.0%

Explanation:
No explanation is available for this question!


16)   Plants growing on sand and gravel are called:

a. Eremophytes
b. Oxylophytes
c. Psilophytes
d. Psammophytes
Answer  Explanation 

ANSWER: Psammophytes

Explanation:
No explanation is available for this question!


17)   Which of the following is a mangrove plant?

a. Acanthus ilicifolius
b. Avicennia offcinalis
c. Ceriops roxburghiana
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!


18)   Mark the free floating hydrophyte:

a. Sagittaria
b. Typha
c. Najas
d. Spirodela
Answer  Explanation 

ANSWER: Spirodela

Explanation:
No explanation is available for this question!


19)   Magnolia and oaks occur in the following zone:

a. Tropical
b. Sub-tropical
c. Alpine
d. Temperate
Answer  Explanation 

ANSWER: Temperate

Explanation:
No explanation is available for this question!


20)   Mark the true xerophyte:

a. Capparis aphylla
b. Solanum xanthocarpum
c. Euphorbia milli
d. All of these
Answer  Explanation 

ANSWER: Capparis aphylla

Explanation:
No explanation is available for this question!


21)   The temperature based zone at an altitude of 10,000 is:

a. Tropical
b. Sub-tropical
c. Temperate
d. Alpine
Answer  Explanation 

ANSWER: Temperate

Explanation:
No explanation is available for this question!


22)   The orange and red wave lengths of light are able to penetrates in a sea upto a depth of:

a. 5 meters only
b. 20 meters only
c. 50 meters
d. 80-100 meters
Answer  Explanation 

ANSWER: 20 meters only

Explanation:
No explanation is available for this question!


23)   The alpine forests are classed nder the plant group called:

a. Mesotherms
b. Megatherms
c. Microtherms
d. Hekistotherms
Answer  Explanation 

ANSWER: Hekistotherms

Explanation:
No explanation is available for this question!


24)   The heliophytes are characterised by:

a. High OP, high K+ conc.
b. High OP, low K+ conc.
c. Low OP, low K+ conc
d. Low OP, high K+ conc.
Answer  Explanation 

ANSWER: High OP, low K+ conc.

Explanation:
No explanation is available for this question!


25)   When a plant of hot climate is transferred to colder regions, it gets an injury called:

a. Chilling
b. Thermal death
c. Desiccation
d. Freezing
Answer  Explanation 

ANSWER: Chilling

Explanation:
No explanation is available for this question!


26)   In western Himalayas, the Betula trees usually occur in:

a. Tropical zone
b. Sub-tropical zone
c. Alpine zone
d. Temperate zone
Answer  Explanation 

ANSWER: Alpine zone

Explanation:
No explanation is available for this question!


27)   The heliophytes possess:

a. Low K+ concentration and low O.P.
b. High K+ concentration and low O.P.
c. Low K+ concentration and high O.P.
d. High K+ concentration and high O.P
Answer  Explanation 

ANSWER: Low K+ concentration and high O.P.

Explanation:
No explanation is available for this question!


28)   Flowering is induced if germinating seeds are exposed to:

a. Low temperature
b. High Temperature
c. Temperature below freezing
d. Temperature above 45 degree C
Answer  Explanation 

ANSWER: Low temperature

Explanation:
No explanation is available for this question!


29)   The composition of soil air is affected by:

a. Pore size
b. Soil organisms
c. Type of roots
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!


30)   Albido value refers to:

a. Turbidity of solar radiations
b. Percentage of solar absorption
c. Percentage of reflected light by a surface
d. Amount of light absorbed by forests
Answer  Explanation 

ANSWER: Percentage of reflected light by a surface

Explanation:
No explanation is available for this question!


31)   Plants growing near the sea whore are generally resistant to:

a. Lodging
b. Erosion
c. Salt spray
d. Injuries
Answer  Explanation 

ANSWER: Salt spray

Explanation:
No explanation is available for this question!


32)   The albido value of a forest is around:

a. 1-2%
b. 3-5%
c. 5-10%
d. 20-30%
Answer  Explanation 

ANSWER: 5-10%

Explanation:
No explanation is available for this question!


33)   Plants growing in rock crevices are called:

a. Sciophytes
b. Chasmophytes
c. Helophytes
d. None of these
Answer  Explanation 

ANSWER: Chasmophytes

Explanation:
No explanation is available for this question!


34)   The equatic thermal strata where no temperature gradients are observed is called:

a. Epilimnion
b. Metalimnion
c. Hypolimnion
d. Thermocline
Answer  Explanation 

ANSWER: Hypolimnion

Explanation:
No explanation is available for this question!


35)   The ultraviolet radiations are able to peretreate in a sea as deep as:

a. 40 meters
b. 400 meters
c. 200 meters
d. 5 meters
Answer  Explanation 

ANSWER: 200 meters

Explanation:
No explanation is available for this question!


36)   The facultative heliophytes are infact:

a. Heliophytes
b. Chasmophytes
c. Chersophytes
d. Sciophytes
Answer  Explanation 

ANSWER: Sciophytes

Explanation:
No explanation is available for this question!


37)   The heliophytes are characterised by:

a. Vertically oriented leaves
b. Horizontally oriented leaves
c. Dropping leaves
d. Twisted leaves
Answer  Explanation 

ANSWER: Vertically oriented leaves

Explanation:
No explanation is available for this question!


38)   The classification of plant groups on the basis of temperature differentiating four zone such as megatherms was proposed by:

a. Clements
b. Raunkiaer
c. Odum
d. Warming
Answer  Explanation 

ANSWER: Raunkiaer

Explanation:
No explanation is available for this question!


39)   Which of the following is a shourt day plant?

a. Triticum
b. Lycopersicon
c. Gossypium
d. Nicotiana
Answer  Explanation 

ANSWER: Triticum

Explanation:
No explanation is available for this question!


40)   The percentage of argon in the atmosphere is:

a. About 1%
b. 0.35%
c. 0.90%
d. 3%
Answer  Explanation 

ANSWER: 0.90%

Explanation:
No explanation is available for this question!


41)   The percentage of light from total solar input utilized by plants:

a. About 1%
b. 3 - 5%
c. 7 - 8%
d. 14%
Answer  Explanation 

ANSWER: About 1%

Explanation:
No explanation is available for this question!


42)   Plants growing in alpine zone are dwarf due to:

a. Low temperature
b. High wind velocity
c. High light intensity
d. None of these
Answer  Explanation 

ANSWER: High wind velocity

Explanation:
No explanation is available for this question!


43)   According to Geiger, the percentage of light reflected by the clouds is:

a. 9%
b. 10%
c. 48%
d. 39%
Answer  Explanation 

ANSWER: 39%

Explanation:
No explanation is available for this question!


44)   An anatomical features, which exclusively develops to counter high velocity of wind:

a. Reaction wood formation
b. Absence of secondary growth
c. Absence of tylosis
d. All of these
Answer  Explanation 

ANSWER: Reaction wood formation

Explanation:
No explanation is available for this question!


45)   According to Mc Dougal, the parasitism caused due to fungi and bacteria represent a symbiotic relationship which is:

a. Social and antagonistic
b. Nutritive and antagonistic
c. Social and reciprocal
d. Nutritive and reciprocal
Answer  Explanation 

ANSWER: Nutritive and antagonistic

Explanation:
No explanation is available for this question!


46)   The air density is maximum:

a. Above 32'
b. At the soil surface
c. Between 32' - 64' from soil level
d. In the hydrosphere
Answer  Explanation 

ANSWER: At the soil surface

Explanation:
No explanation is available for this question!


47)   The relationship between a climber and the host corresponds to:

a. Neutralism
b. Mutualism
c. Parasitism
d. Commensalism
Answer  Explanation 

ANSWER: Commensalism

Explanation:
No explanation is available for this question!


48)   Flag trees' are formed due to:

a. Lodging
b. Erosion and deperition
c. Unidirectional wind
d. Salt spray
Answer  Explanation 

ANSWER: Unidirectional wind

Explanation:
No explanation is available for this question!


49)   Plants growing on burnt soil are called:

a. Heliophilous
b. Hydrophilous
c. Pyrophilous
d. Pyriform
Answer  Explanation 

ANSWER: Pyrophilous

Explanation:
No explanation is available for this question!


50)   The lichens show a mutualistic relationship originating from:

a. Obligate parasitism
b. Facultative parasitism
c. Halotism
d. None of these
Answer  Explanation 

ANSWER: Halotism

Explanation:
No explanation is available for this question!