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1 / 30

Select true statements :-
सत्य कथनों का चयन करिए:
(a) Lenticels are absent in woody climbers and leaves
पत्तियों व काष्ठीय आरोही में वातरन्ध्र अनुपस्थित होते हैं।
(b) Lenticels occur in most woody trees
अधिकांश काष्ठीय वृक्षों में वातरन्ध्र पाए जाते हैं।
(c) The spring wood is lighter in colour and has a lower density
बसन्त काष्ठ हल्के रंग की एवं कम घनत्व वाली होती है।
(d) The sap wood also called as duramen
रस काष्ठ को, ड्यूरामेन भी कहते हैं।

2 / 30

When protoxylem faces pericycle, it is called
जब प्रोटोजाइलम परिरंभ की ओर उन्मुख हो तो यह स्थिति कहलाती है -

3 / 30

Which of the following provide maximum mechanical strength to a tree trunk.
कौन एक वृक्ष के तने को सर्वाधिक यांत्रिक शक्ति प्रदान करता है

4 / 30

Sea shore trees do not show annual rings because
समुद्री किनारें पर स्थित पेड़ों में वार्षिक वलय नहीं होती है, क्योंकि

5 / 30

Water conduction in stem of tree takes place mainly by-
एक वृक्ष के तने में जल का संवहन किसके द्वारा होता है

6 / 30

Phelloderm is formed by -
फैलोडर्म बनती है- है।

7 / 30

Youngest layer of secondary xylem is located
द्वितीयक जाइलम की नवीनतम पर्त कहां स्थित होती है.

8 / 30

External protective tissues are-
बाहरी सुरक्षा उत्तक है।

9 / 30

Growth rings are formed due to the activity of-
किसकी क्रियाशीलता के कारण वृद्धि वलय बनती है।

10 / 30

Living tissue in lenticel is called
वातरन्ध्र में स्थित जीवित ऊतक कहलाता है

11 / 30

Formation of which tissue is example of dedifferentiation
किस ऊतक का बनना विविभेदन का उदाहरण है

12 / 30

Cork cambium is
काग एधा होती है

13 / 30

Normally in dicot stems, phellogen develops from
सामान्यतः द्विबीजपत्री तनों में फैलोजन का निर्माण होता है

14 / 30

Which wood conduct sap -
कौनसी काष्ठ, रस का संवहन करती है

15 / 30

Suberin in chiefly deposited in the cells of
सुबेरिन का जमाव किन कोशिकाओं में पाया जाता है

16 / 30

How many types of cells are present in vascular cambium of dicot stem
द्विबीजपत्री तने में संवहनी एधा में कितने प्रकार की कोशिकाएं उपस्थित है -

17 / 30

What happens to primary phloem in stem after sec growth
द्वितीयक वृद्धि शुरू होने पर तने में प्राथमिक फ्लोएम का क्या होता है -

18 / 30

Annual rings are the bands of-
वार्षिक वलय पट्टियां हैं

19 / 30

Which of the following is a meristematic tissue
निम्न में से कौनसा विभज्योतक है

20 / 30

Sugar transport elements of gymnosperms & pteridophytes are -
टेरिडोफाइटा व जिम्नोस्पर्म के शर्करा स्थानान्तरी अवयव है

21 / 30

Annual rings are well demarcated in trees growing in-
वार्षिक वलय उन वृक्षों में सुविकसित होंगी जो उगाये जाते हैं

22 / 30

Secondary growth in dicots and gymnosperms occurs by
द्विबीजपत्रियों एवं जिम्नोस्पर्म्स में द्वितीयक वृद्धि होती है

23 / 30

Lenticels do not occur on-
वात्रन्ध्र नहीं पाये जाते हैं

24 / 30

A timber merchant told his customer that log of wood which he was purchasing comes from a 20 years old tree, he told so by inspecting the -
एक लकड़ी व्यापारी ने अपने ग्राहक से कहा कि जो लकड़ी का बंडल आप खरीद रहे हैं वह 20 साल पुराने वृक्ष से आया है। ऐसा उसने क्या देखकर कहा

25 / 30

Which tissue remains more active during spring
बसंत में कौनसा ऊतक अधिक क्रियाशील होता है

26 / 30

Extra stelar secondary growth in dicot stem occurs due to the activity of
बाह्यरंभीय द्वितीयक वृद्धि किसकी क्रियाशीलता से होती है

27 / 30

When a tree grows older which of the following increased rapidly -
जब एक अधिक आयु वाला वृक्ष वृद्धि करेगा तो कौन शीघ्रता से वृद्धि करेगा

28 / 30

In trees, the annual rings represent
वृक्षों में वार्षिक वलय दर्शाती है।

29 / 30

Dendrochronology is the study of determination of-
वृक्षाकालानुक्रमण में अध्ययन किया जाता है।

30 / 30

Normally secondary growth takes place in-
सामान्य द्वितीयक वृद्धि किसमे पाई जाती है

Your score is

The average score is 44%



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